diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9f6ade00a2..8707c9b718 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,9 +2,9 @@ name: build
 
 on:
   pull_request:
-    types: [opened, reopened, synchronize]
+    types: [ opened, reopened, synchronize ]
   push:
-    branches: ['main']
+    branches: [ 'main' ]
 
 jobs:
   changes:
@@ -15,25 +15,25 @@ jobs:
       needs_build: ${{ steps.filter.outputs.needs_build }}
       templates: ${{ steps.filter.outputs.templates }}
     steps:
-    - uses: actions/checkout@v4
-      with:
-        fetch-depth: 25
-    - uses: dorny/paths-filter@v2
-      id: filter
-      with:
-        filters: |
-          needs_build:
-            - '.github/workflows/**'
-            - 'packages/**'
-            - 'test/**'
-            - 'pnpm-lock.yaml'
-            - 'package.json'
-          templates:
-            - 'templates/**'
-    - name: Log all filter results
-      run: |
-        echo "needs_build: ${{ steps.filter.outputs.needs_build }}"
-        echo "templates: ${{ steps.filter.outputs.templates }}"
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 25
+      - uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          filters: |
+            needs_build:
+              - '.github/workflows/**'
+              - 'packages/**'
+              - 'test/**'
+              - 'pnpm-lock.yaml'
+              - 'package.json'
+            templates:
+              - 'templates/**'
+      - name: Log all filter results
+        run: |
+          echo "needs_build: ${{ steps.filter.outputs.needs_build }}"
+          echo "templates: ${{ steps.filter.outputs.templates }}"
 
   core-build:
     needs: changes
@@ -85,7 +85,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        database: [mongoose, postgres, supabase]
+        database: [ mongoose, postgres, postgres-uuid, supabase ]
     env:
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres
@@ -116,7 +116,7 @@ jobs:
           postgresql db: ${{ env.POSTGRES_DB }}
           postgresql user: ${{ env.POSTGRES_USER }}
           postgresql password: ${{ env.POSTGRES_PASSWORD }}
-        if: matrix.database == 'postgres'
+        if: matrix.database == 'postgres' || matrix.database == 'postgres-uuid'
 
       - name: Install Supabase CLI
         uses: supabase/setup-cli@v1
@@ -132,14 +132,14 @@ jobs:
 
       - name: Wait for PostgreSQL
         run: sleep 30
-        if: matrix.database == 'postgres'
+        if: matrix.database == 'postgres' || matrix.database == 'postgres-uuid'
 
       - name: Configure PostgreSQL
         run: |
           psql "postgresql://$POSTGRES_USER:$POSTGRES_PASSWORD@localhost:5432/$POSTGRES_DB" -c "CREATE ROLE runner SUPERUSER LOGIN;"
           psql "postgresql://$POSTGRES_USER:$POSTGRES_PASSWORD@localhost:5432/$POSTGRES_DB" -c "SELECT version();"
           echo "POSTGRES_URL=postgresql://$POSTGRES_USER:$POSTGRES_PASSWORD@localhost:5432/$POSTGRES_DB" >> $GITHUB_ENV
-        if: matrix.database == 'postgres'
+        if: matrix.database == 'postgres' || matrix.database == 'postgres-uuid'
 
       - name: Configure Supabase
         run: |
@@ -162,7 +162,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        part: [1/8, 2/8, 3/8, 4/8, 5/8, 6/8, 7/8, 8/8]
+        part: [ 1/8, 2/8, 3/8, 4/8, 5/8, 6/8, 7/8, 8/8 ]
 
     steps:
       - name: Use Node.js 18
@@ -310,7 +310,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        template: [blank, website, ecommerce]
+        template: [ blank, website, ecommerce ]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/packages/db-postgres/src/index.ts b/packages/db-postgres/src/index.ts
index bab35d9e6a..aebe1e34cb 100644
--- a/packages/db-postgres/src/index.ts
+++ b/packages/db-postgres/src/index.ts
@@ -42,7 +42,7 @@ export type { MigrateDownArgs, MigrateUpArgs } from './types'
 export function postgresAdapter(args: Args): PostgresAdapterResult {
   function adapter({ payload }: { payload: Payload }) {
     const migrationDir = findMigrationDir(args.migrationDir)
-
+    const idType = args.idType || 'serial'
     return createDatabaseAdapter<PostgresAdapter>({
       name: 'postgres',
 
@@ -50,6 +50,7 @@ export function postgresAdapter(args: Args): PostgresAdapterResult {
       drizzle: undefined,
       enums: {},
       fieldConstraints: {},
+      idType,
       logger: args.logger,
       pool: undefined,
       poolOptions: args.pool,
@@ -68,7 +69,10 @@ export function postgresAdapter(args: Args): PostgresAdapterResult {
       createGlobalVersion,
       createMigration,
       createVersion,
-      defaultIDType: 'number',
+      /**
+       * This represents how a default ID is treated in Payload as were a field type
+       */
+      defaultIDType: idType === 'serial' ? 'number' : 'text',
       deleteMany,
       deleteOne,
       deleteVersions,
diff --git a/packages/db-postgres/src/init.ts b/packages/db-postgres/src/init.ts
index 233508144c..777dae82bf 100644
--- a/packages/db-postgres/src/init.ts
+++ b/packages/db-postgres/src/init.ts
@@ -9,7 +9,6 @@ import toSnakeCase from 'to-snake-case'
 import type { PostgresAdapter } from './types'
 
 import { buildTable } from './schema/build'
-import { getConfigIDType } from './schema/getConfigIDType'
 
 export const init: Init = async function init(this: PostgresAdapter) {
   if (this.payload.config.localization) {
@@ -24,9 +23,9 @@ export const init: Init = async function init(this: PostgresAdapter) {
 
     buildTable({
       adapter: this,
-      buildTexts: true,
       buildNumbers: true,
       buildRelationships: true,
+      buildTexts: true,
       disableNotNull: !!collection?.versions?.drafts,
       disableUnique: false,
       fields: collection.fields,
@@ -38,13 +37,11 @@ export const init: Init = async function init(this: PostgresAdapter) {
       const versionsTableName = `_${tableName}_v`
       const versionFields = buildVersionCollectionFields(collection)
 
-      const versionsParentIDColType = getConfigIDType(collection.fields)
-
       buildTable({
         adapter: this,
-        buildTexts: true,
         buildNumbers: true,
         buildRelationships: true,
+        buildTexts: true,
         disableNotNull: !!collection.versions?.drafts,
         disableUnique: true,
         fields: versionFields,
@@ -59,9 +56,9 @@ export const init: Init = async function init(this: PostgresAdapter) {
 
     buildTable({
       adapter: this,
-      buildTexts: true,
       buildNumbers: true,
       buildRelationships: true,
+      buildTexts: true,
       disableNotNull: !!global?.versions?.drafts,
       disableUnique: false,
       fields: global.fields,
@@ -75,9 +72,9 @@ export const init: Init = async function init(this: PostgresAdapter) {
 
       buildTable({
         adapter: this,
-        buildTexts: true,
         buildNumbers: true,
         buildRelationships: true,
+        buildTexts: true,
         disableNotNull: !!global.versions?.drafts,
         disableUnique: true,
         fields: versionFields,
diff --git a/packages/db-postgres/src/queries/getTableColumnFromPath.ts b/packages/db-postgres/src/queries/getTableColumnFromPath.ts
index 2f01c0d906..258e3f361e 100644
--- a/packages/db-postgres/src/queries/getTableColumnFromPath.ts
+++ b/packages/db-postgres/src/queries/getTableColumnFromPath.ts
@@ -1,6 +1,6 @@
 /* eslint-disable no-param-reassign */
 import type { SQL } from 'drizzle-orm'
-import type { Field, FieldAffectingData, TabAsField } from 'payload/types'
+import type {  Field, FieldAffectingData, NumberField, TabAsField, TextField } from 'payload/types'
 
 import { and, eq, like, sql } from 'drizzle-orm'
 import { alias } from 'drizzle-orm/pg-core'
@@ -88,8 +88,8 @@ export const getTableColumnFromPath = ({
       constraints,
       field: {
         name: 'id',
-        type: 'number',
-      },
+        type: adapter.idType === 'uuid' ? 'text' : 'number',
+      } as TextField | NumberField,
       table: adapter.tables[newTableName],
     }
   }
diff --git a/packages/db-postgres/src/queries/parseParams.ts b/packages/db-postgres/src/queries/parseParams.ts
index ef19156496..53f78b46f4 100644
--- a/packages/db-postgres/src/queries/parseParams.ts
+++ b/packages/db-postgres/src/queries/parseParams.ts
@@ -169,6 +169,7 @@ export async function parseParams({
                 }
 
                 const sanitizedQueryValue = sanitizeQueryValue({
+                  adapter,
                   field,
                   operator,
                   relationOrPath,
diff --git a/packages/db-postgres/src/queries/sanitizeQueryValue.ts b/packages/db-postgres/src/queries/sanitizeQueryValue.ts
index f35061a1bd..56d8fc3add 100644
--- a/packages/db-postgres/src/queries/sanitizeQueryValue.ts
+++ b/packages/db-postgres/src/queries/sanitizeQueryValue.ts
@@ -2,7 +2,10 @@ import { APIError } from 'payload/errors'
 import { type Field, type TabAsField, fieldAffectsData } from 'payload/types'
 import { createArrayFromCommaDelineated } from 'payload/utilities'
 
+import type { PostgresAdapter } from '../types'
+
 type SanitizeQueryValueArgs = {
+  adapter: PostgresAdapter
   field: Field | TabAsField
   operator: string
   relationOrPath: string
@@ -10,6 +13,7 @@ type SanitizeQueryValueArgs = {
 }
 
 export const sanitizeQueryValue = ({
+  adapter,
   field,
   operator: operatorArg,
   relationOrPath,
@@ -27,8 +31,10 @@ export const sanitizeQueryValue = ({
   ) {
     const allPossibleIDTypes: (number | string)[] = []
     formattedValue.forEach((val) => {
-      if (typeof val === 'string') {
+      if (adapter.idType !== 'uuid' && typeof val === 'string') {
         allPossibleIDTypes.push(val, parseInt(val))
+      } else if (typeof val === 'string') {
+        allPossibleIDTypes.push(val)
       } else {
         allPossibleIDTypes.push(val, String(val))
       }
diff --git a/packages/db-postgres/src/schema/build.ts b/packages/db-postgres/src/schema/build.ts
index c2ed66c438..2905d8684b 100644
--- a/packages/db-postgres/src/schema/build.ts
+++ b/packages/db-postgres/src/schema/build.ts
@@ -17,10 +17,10 @@ import {
 import { fieldAffectsData } from 'payload/types'
 import toSnakeCase from 'to-snake-case'
 
-import type { GenericColumns, GenericTable, PostgresAdapter } from '../types'
+import type { GenericColumns, GenericTable, IDType, PostgresAdapter } from '../types'
 
-import { getConfigIDType } from './getConfigIDType'
 import { parentIDColumnMap } from './parentIDColumnMap'
+import { setColumnID } from './setColumnID'
 import { traverseFields } from './traverseFields'
 
 type Args = {
@@ -89,15 +89,8 @@ export const buildTable = ({
   // Drizzle relations
   const relationsToBuild: Map<string, string> = new Map()
 
-  const idColType = getConfigIDType(fields)
+  const idColType: IDType = setColumnID({ adapter, columns, fields })
 
-  const idColTypeMap = {
-    integer: serial,
-    numeric,
-    varchar,
-  }
-
-  columns.id = idColTypeMap[idColType]('id').primaryKey()
   ;({
     hasLocalizedField,
     hasLocalizedManyNumberField,
@@ -300,7 +293,7 @@ export const buildTable = ({
 
       relationships.forEach((relationTo) => {
         const formattedRelationTo = toSnakeCase(relationTo)
-        let colType = 'integer'
+        let colType = adapter.idType === 'uuid' ? 'uuid' : 'integer'
         const relatedCollectionCustomID = adapter.payload.collections[
           relationTo
         ].config.fields.find((field) => fieldAffectsData(field) && field.name === 'id')
diff --git a/packages/db-postgres/src/schema/getConfigIDType.ts b/packages/db-postgres/src/schema/getConfigIDType.ts
deleted file mode 100644
index 5f21d58f65..0000000000
--- a/packages/db-postgres/src/schema/getConfigIDType.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { type Field, fieldAffectsData } from 'payload/types'
-
-export const getConfigIDType = (fields: Field[]): string => {
-  const idField = fields.find((field) => fieldAffectsData(field) && field.name === 'id')
-
-  if (idField) {
-    if (idField.type === 'number') {
-      return 'numeric'
-    }
-
-    if (idField.type === 'text') {
-      return 'varchar'
-    }
-  }
-
-  return 'integer'
-}
diff --git a/packages/db-postgres/src/schema/parentIDColumnMap.ts b/packages/db-postgres/src/schema/parentIDColumnMap.ts
index eba60e8d08..a82cb98f8a 100644
--- a/packages/db-postgres/src/schema/parentIDColumnMap.ts
+++ b/packages/db-postgres/src/schema/parentIDColumnMap.ts
@@ -1,7 +1,13 @@
-import { integer, numeric, varchar } from 'drizzle-orm/pg-core'
+import { integer, numeric, uuid, varchar } from 'drizzle-orm/pg-core'
 
-export const parentIDColumnMap = {
+import type { IDType } from '../types'
+
+export const parentIDColumnMap: Record<
+  IDType,
+  typeof integer<string> | typeof numeric<string> | typeof uuid<string> | typeof varchar
+> = {
   integer,
   numeric,
+  uuid,
   varchar,
 }
diff --git a/packages/db-postgres/src/schema/setColumnID.ts b/packages/db-postgres/src/schema/setColumnID.ts
new file mode 100644
index 0000000000..74e6bc4c84
--- /dev/null
+++ b/packages/db-postgres/src/schema/setColumnID.ts
@@ -0,0 +1,33 @@
+import type { PgColumnBuilder } from 'drizzle-orm/pg-core'
+
+import { numeric, serial, uuid, varchar } from 'drizzle-orm/pg-core'
+import { type Field, fieldAffectsData } from 'payload/types'
+import { flattenTopLevelFields } from 'payload/utilities'
+
+import type { IDType, PostgresAdapter } from '../types'
+
+type Args = { adapter: PostgresAdapter; columns: Record<string, PgColumnBuilder>; fields: Field[] }
+export const setColumnID = ({ adapter, columns, fields }: Args): IDType => {
+  const idField = flattenTopLevelFields(fields).find(
+    (field) => fieldAffectsData(field) && field.name === 'id',
+  )
+  if (idField) {
+    if (idField.type === 'number') {
+      columns.id = numeric('id').primaryKey()
+      return 'numeric'
+    }
+
+    if (idField.type === 'text') {
+      columns.id = varchar('id').primaryKey()
+      return 'varchar'
+    }
+  }
+
+  if (adapter.idType === 'uuid') {
+    columns.id = uuid('id').defaultRandom().primaryKey()
+    return 'uuid'
+  }
+
+  columns.id = serial('id').primaryKey()
+  return 'integer'
+}
diff --git a/packages/db-postgres/src/schema/traverseFields.ts b/packages/db-postgres/src/schema/traverseFields.ts
index 35093bb401..632a820834 100644
--- a/packages/db-postgres/src/schema/traverseFields.ts
+++ b/packages/db-postgres/src/schema/traverseFields.ts
@@ -6,6 +6,7 @@ import type { Field, TabAsField } from 'payload/types'
 import { relations } from 'drizzle-orm'
 import {
   PgNumericBuilder,
+  PgUUIDBuilder,
   PgVarcharBuilder,
   boolean,
   index,
@@ -21,7 +22,7 @@ import { InvalidConfiguration } from 'payload/errors'
 import { fieldAffectsData, optionIsObject } from 'payload/types'
 import toSnakeCase from 'to-snake-case'
 
-import type { GenericColumns, PostgresAdapter } from '../types'
+import type { GenericColumns, IDType, PostgresAdapter } from '../types'
 
 import { hasLocalesTable } from '../utilities/hasLocalesTable'
 import { buildTable } from './build'
@@ -93,7 +94,8 @@ export const traverseFields = ({
   let hasManyNumberField: 'index' | boolean = false
   let hasLocalizedManyNumberField = false
 
-  let parentIDColType = 'integer'
+  let parentIDColType: IDType = 'integer'
+  if (columns.id instanceof PgUUIDBuilder) parentIDColType = 'uuid'
   if (columns.id instanceof PgNumericBuilder) parentIDColType = 'numeric'
   if (columns.id instanceof PgVarcharBuilder) parentIDColType = 'varchar'
 
diff --git a/packages/db-postgres/src/types.ts b/packages/db-postgres/src/types.ts
index cfe5927193..e23c6e7345 100644
--- a/packages/db-postgres/src/types.ts
+++ b/packages/db-postgres/src/types.ts
@@ -16,6 +16,7 @@ import type { Pool, PoolConfig } from 'pg'
 export type DrizzleDB = NodePgDatabase<Record<string, unknown>>
 
 export type Args = {
+  idType?: 'serial' | 'uuid'
   logger?: DrizzleConfig['logger']
   migrationDir?: string
   pool: PoolConfig
@@ -56,6 +57,7 @@ export type PostgresAdapter = BaseDatabaseAdapter & {
    * Used for returning properly formed errors from unique fields
    */
   fieldConstraints: Record<string, Record<string, string>>
+  idType: Args['idType']
   logger: DrizzleConfig['logger']
   pool: Pool
   poolOptions: Args['pool']
@@ -72,6 +74,8 @@ export type PostgresAdapter = BaseDatabaseAdapter & {
   tables: Record<string, GenericTable>
 }
 
+export type IDType = 'integer' | 'numeric' | 'uuid' | 'varchar'
+
 export type PostgresAdapterResult = (args: { payload: Payload }) => PostgresAdapter
 
 export type MigrateUpArgs = { payload: Payload; req?: Partial<PayloadRequest> }
diff --git a/packages/db-postgres/src/upsertRow/insertArrays.ts b/packages/db-postgres/src/upsertRow/insertArrays.ts
index 9193389f02..f187f4c002 100644
--- a/packages/db-postgres/src/upsertRow/insertArrays.ts
+++ b/packages/db-postgres/src/upsertRow/insertArrays.ts
@@ -36,7 +36,7 @@ export const insertArrays = async ({ adapter, arrays, db, parentRows }: Args): P
         }
       }
 
-      const parentID = parentRows[parentRowIndex].id || parentRows[parentRowIndex]._parentID
+      const parentID = parentRows[parentRowIndex].id
 
       // Add any sub arrays that need to be created
       // We will call this recursively below
@@ -61,8 +61,10 @@ export const insertArrays = async ({ adapter, arrays, db, parentRows }: Args): P
   // Insert all corresponding arrays
   // (one insert per array table)
   for (const [tableName, row] of Object.entries(rowsByTable)) {
+    // the nested arrays need the ID for the parentID foreign key
+    let insertedRows: Args['parentRows']
     if (row.rows.length > 0) {
-      await db.insert(adapter.tables[tableName]).values(row.rows).returning()
+      insertedRows = await db.insert(adapter.tables[tableName]).values(row.rows).returning()
     }
 
     // Insert locale rows
@@ -76,7 +78,7 @@ export const insertArrays = async ({ adapter, arrays, db, parentRows }: Args): P
         adapter,
         arrays: row.arrays,
         db,
-        parentRows: row.rows,
+        parentRows: insertedRows,
       })
     }
   }
diff --git a/test/buildConfigWithDefaults.ts b/test/buildConfigWithDefaults.ts
index 355460e517..02ef05feb2 100644
--- a/test/buildConfigWithDefaults.ts
+++ b/test/buildConfigWithDefaults.ts
@@ -35,6 +35,13 @@ const databaseAdapters = {
       connectionString: process.env.POSTGRES_URL || 'postgres://127.0.0.1:5432/payloadtests',
     },
   }),
+  'postgres-uuid': postgresAdapter({
+    idType: 'uuid',
+    migrationDir,
+    pool: {
+      connectionString: process.env.POSTGRES_URL || 'postgres://127.0.0.1:5432/payloadtests',
+    },
+  }),
   supabase: postgresAdapter({
     migrationDir,
     pool: {