diff --git a/.changeset/nasty-dragons-melt.md b/.changeset/nasty-dragons-melt.md
new file mode 100644
index 0000000000..2f6610ff31
--- /dev/null
+++ b/.changeset/nasty-dragons-melt.md
@@ -0,0 +1,15 @@
+---
+'@backstage/plugin-scaffolder': patch
+---
+
+Form data is now passed to validator functions in 'next' scaffolder, so it's now possible to perform validation for fields that depend on other field values. This is something that we discourage due to the coupling that it creates, but is sometimes still the most sensible solution.
+
+```typescript jsx
+export const myCustomValidation = (
+  value: string,
+  validation: FieldValidation,
+  { apiHolder, formData }: { apiHolder: ApiHolder; formData: JsonObject },
+) => {
+  // validate
+};
+```
diff --git a/plugins/scaffolder/api-report.md b/plugins/scaffolder/api-report.md
index a8dcdd76ed..68bc893b6f 100644
--- a/plugins/scaffolder/api-report.md
+++ b/plugins/scaffolder/api-report.md
@@ -224,6 +224,7 @@ export type NextCustomFieldValidator<TFieldReturnValue> = (
   field: FieldValidation_2,
   context: {
     apiHolder: ApiHolder;
+    formData: JsonObject;
   },
 ) => void | Promise<void>;
 
diff --git a/plugins/scaffolder/src/extensions/types.ts b/plugins/scaffolder/src/extensions/types.ts
index 3834b39c0a..5e133c676b 100644
--- a/plugins/scaffolder/src/extensions/types.ts
+++ b/plugins/scaffolder/src/extensions/types.ts
@@ -23,6 +23,7 @@ import {
 } from '@rjsf/utils';
 import { PropsWithChildren } from 'react';
 import { JSONSchema7 } from 'json-schema';
+import { JsonObject } from '@backstage/types';
 
 /**
  * Field validation type for Custom Field Extensions.
@@ -100,7 +101,7 @@ export interface NextFieldExtensionComponentProps<
 export type NextCustomFieldValidator<TFieldReturnValue> = (
   data: TFieldReturnValue,
   field: FieldValidationV5,
-  context: { apiHolder: ApiHolder },
+  context: { apiHolder: ApiHolder; formData: JsonObject },
 ) => void | Promise<void>;
 
 /**
diff --git a/plugins/scaffolder/src/next/TemplateWizardPage/Stepper/createAsyncValidators.ts b/plugins/scaffolder/src/next/TemplateWizardPage/Stepper/createAsyncValidators.ts
index 1355387eda..6483ce2393 100644
--- a/plugins/scaffolder/src/next/TemplateWizardPage/Stepper/createAsyncValidators.ts
+++ b/plugins/scaffolder/src/next/TemplateWizardPage/Stepper/createAsyncValidators.ts
@@ -42,7 +42,7 @@ export const createAsyncValidators = (
         if (validator) {
           const fieldValidation = createFieldValidation();
           try {
-            await validator(value, fieldValidation, context);
+            await validator(value, fieldValidation, { ...context, formData });
           } catch (ex) {
             fieldValidation.addError(ex.message);
           }