diff --git a/lib/modules/platform/bitbucket-server/__snapshots__/index.spec.ts.snap b/lib/modules/platform/bitbucket-server/__snapshots__/index.spec.ts.snap
index 76d488bcf8bbf9b..0d28800baf0d89b 100644
--- a/lib/modules/platform/bitbucket-server/__snapshots__/index.spec.ts.snap
+++ b/lib/modules/platform/bitbucket-server/__snapshots__/index.spec.ts.snap
@@ -151,6 +151,7 @@ exports[`modules/platform/bitbucket-server/index endpoint with no path getPrList
 exports[`modules/platform/bitbucket-server/index endpoint with no path initPlatform() should init 1`] = `
 {
   "endpoint": "https://stash.renovatebot.com/",
+  "gitAuthor": "Abc Def <abc@def.com>",
 }
 `;
 
@@ -355,6 +356,7 @@ exports[`modules/platform/bitbucket-server/index endpoint with path getPrList()
 exports[`modules/platform/bitbucket-server/index endpoint with path initPlatform() should init 1`] = `
 {
   "endpoint": "https://stash.renovatebot.com/",
+  "gitAuthor": "Abc Def <abc@def.com>",
 }
 `;
 
diff --git a/lib/modules/platform/bitbucket-server/index.spec.ts b/lib/modules/platform/bitbucket-server/index.spec.ts
index d11230612388a2f..61bdbb2a287bb83 100644
--- a/lib/modules/platform/bitbucket-server/index.spec.ts
+++ b/lib/modules/platform/bitbucket-server/index.spec.ts
@@ -10,6 +10,7 @@ import {
 import type { logger as _logger } from '../../../logger';
 import type * as _git from '../../../util/git';
 import type { LongCommitSha } from '../../../util/git/types';
+import { ensureTrailingSlash } from '../../../util/url';
 import type { Platform } from '../types';
 
 jest.mock('timers/promises');
@@ -190,6 +191,11 @@ describe('modules/platform/bitbucket-server/index', () => {
       let logger: jest.Mocked<typeof _logger>;
       const username = 'abc';
       const password = '123';
+      const userInfo = {
+        name: username,
+        emailAddress: 'abc@def.com',
+        displayName: 'Abc Def',
+      };
 
       async function initRepo(config = {}): Promise<httpMock.Scope> {
         const scope = httpMock
@@ -234,6 +240,10 @@ describe('modules/platform/bitbucket-server/index', () => {
           .scope(urlHost)
           .get(`${urlPath}/rest/api/1.0/application-properties`)
           .reply(200, { version: '8.0.0' });
+        httpMock
+          .scope(urlHost)
+          .get(`${urlPath}/rest/api/1.0/users/${username}`)
+          .reply(200, userInfo);
         await bitbucket.initPlatform({
           endpoint,
           username,
@@ -292,6 +302,10 @@ describe('modules/platform/bitbucket-server/index', () => {
             .scope('https://stash.renovatebot.com')
             .get('/rest/api/1.0/application-properties')
             .reply(403);
+          httpMock
+            .scope('https://stash.renovatebot.com')
+            .get(`/rest/api/1.0/users/${username}`)
+            .reply(200, userInfo);
 
           await bitbucket.initPlatform({
             endpoint: 'https://stash.renovatebot.com',
@@ -304,8 +318,38 @@ describe('modules/platform/bitbucket-server/index', () => {
           );
         });
 
+        it('should not throw if user info fetch fails', async () => {
+          httpMock
+            .scope(urlHost)
+            .get(`${urlPath}/rest/api/1.0/application-properties`)
+            .reply(200, { version: '8.0.0' });
+          httpMock
+            .scope(urlHost)
+            .get(`${urlPath}/rest/api/1.0/users/${username}`)
+            .reply(404);
+
+          expect(
+            await bitbucket.initPlatform({
+              endpoint: url.href,
+              username,
+              password,
+            }),
+          ).toEqual({
+            endpoint: ensureTrailingSlash(url.href),
+          });
+          expect(logger.debug).toHaveBeenCalledWith(
+            expect.any(Object),
+            'Failed to get user info, fallback gitAuthor will be used',
+          );
+        });
+
         it('should skip api call to fetch version when platform version is set in environment', async () => {
           process.env.RENOVATE_X_PLATFORM_VERSION = '8.0.0';
+          httpMock
+            .scope('https://stash.renovatebot.com')
+            .get(`/rest/api/1.0/users/${username}`)
+            .reply(200, userInfo);
+
           await expect(
             bitbucket.initPlatform({
               endpoint: 'https://stash.renovatebot.com',
@@ -316,11 +360,72 @@ describe('modules/platform/bitbucket-server/index', () => {
           delete process.env.RENOVATE_X_PLATFORM_VERSION;
         });
 
+        it('should skip users api call when gitAuthor is configured', async () => {
+          httpMock
+            .scope(urlHost)
+            .get(`${urlPath}/rest/api/1.0/application-properties`)
+            .reply(200, { version: '8.0.0' });
+
+          expect(
+            await bitbucket.initPlatform({
+              endpoint: url.href,
+              username: 'def',
+              password: '123',
+              gitAuthor: `Def Abc <def@abc.com>`,
+            }),
+          ).toEqual({
+            endpoint: ensureTrailingSlash(url.href),
+          });
+        });
+
+        it('should skip users api call when no username', async () => {
+          httpMock
+            .scope(urlHost)
+            .get(`${urlPath}/rest/api/1.0/application-properties`)
+            .reply(200, { version: '8.0.0' });
+
+          expect(
+            await bitbucket.initPlatform({
+              endpoint: url.href,
+              token: '123',
+            }),
+          ).toEqual({
+            endpoint: ensureTrailingSlash(url.href),
+          });
+        });
+
+        it('should fetch user info if token with username', async () => {
+          httpMock
+            .scope(urlHost)
+            .get(`${urlPath}/rest/api/1.0/application-properties`)
+            .reply(200, { version: '8.0.0' });
+          httpMock
+            .scope(urlHost)
+            .get(`${urlPath}/rest/api/1.0/users/${username}`)
+            .reply(200, userInfo);
+
+          expect(
+            await bitbucket.initPlatform({
+              endpoint: url.href,
+              token: '123',
+              username,
+            }),
+          ).toEqual({
+            endpoint: ensureTrailingSlash(url.href),
+            gitAuthor: `${userInfo.displayName} <${userInfo.emailAddress}>`,
+          });
+        });
+
         it('should init', async () => {
           httpMock
             .scope('https://stash.renovatebot.com')
             .get('/rest/api/1.0/application-properties')
             .reply(200, { version: '8.0.0' });
+          httpMock
+            .scope('https://stash.renovatebot.com')
+            .get(`/rest/api/1.0/users/${username}`)
+            .reply(200, userInfo);
+
           expect(
             await bitbucket.initPlatform({
               endpoint: 'https://stash.renovatebot.com',
diff --git a/lib/modules/platform/bitbucket-server/index.ts b/lib/modules/platform/bitbucket-server/index.ts
index b7c0b235d42950d..badd5e9e0f65519 100644
--- a/lib/modules/platform/bitbucket-server/index.ts
+++ b/lib/modules/platform/bitbucket-server/index.ts
@@ -17,7 +17,7 @@ import {
   BitbucketServerHttp,
   setBaseUrl,
 } from '../../../util/http/bitbucket-server';
-import type { HttpResponse } from '../../../util/http/types';
+import type { HttpOptions, HttpResponse } from '../../../util/http/types';
 import { newlineRegex, regEx } from '../../../util/regex';
 import { sanitize } from '../../../util/sanitize';
 import { ensureTrailingSlash, getQueryString } from '../../../util/url';
@@ -40,6 +40,7 @@ import type {
 } from '../types';
 import { getNewBranchName, repoFingerprint } from '../util';
 import { smartTruncate } from '../utils/pr-body';
+import { UserSchema } from './schema';
 import type {
   BbsConfig,
   BbsPr,
@@ -88,6 +89,7 @@ export async function initPlatform({
   token,
   username,
   password,
+  gitAuthor,
 }: PlatformParams): Promise<PlatformResult> {
   if (!endpoint) {
     throw new Error('Init: You must configure a Bitbucket Server endpoint');
@@ -132,6 +134,39 @@ export async function initPlatform({
     );
   }
 
+  if (!gitAuthor && username) {
+    logger.debug(`Attempting to confirm gitAuthor from username`);
+    const options: HttpOptions = {
+      memCache: false,
+    };
+
+    if (token) {
+      options.token = token;
+    } else {
+      options.username = username;
+      options.password = password;
+    }
+
+    try {
+      const { displayName, emailAddress } = (
+        await bitbucketServerHttp.getJson(
+          `./rest/api/1.0/users/${username}`,
+          options,
+          UserSchema,
+        )
+      ).body;
+
+      platformConfig.gitAuthor = `${displayName} <${emailAddress}>`;
+
+      logger.debug(`Detected gitAuthor: ${platformConfig.gitAuthor}`);
+    } catch (err) {
+      logger.debug(
+        { err },
+        'Failed to get user info, fallback gitAuthor will be used',
+      );
+    }
+  }
+
   return platformConfig;
 }
 
diff --git a/lib/modules/platform/bitbucket-server/schema.ts b/lib/modules/platform/bitbucket-server/schema.ts
new file mode 100644
index 000000000000000..895d1d52abfbe1a
--- /dev/null
+++ b/lib/modules/platform/bitbucket-server/schema.ts
@@ -0,0 +1,6 @@
+import { z } from 'zod';
+
+export const UserSchema = z.object({
+  displayName: z.string(),
+  emailAddress: z.string(),
+});