diff --git a/src/services/auth.service.ts b/src/services/auth.service.ts
index b478e98..3c0eb50 100644
--- a/src/services/auth.service.ts
+++ b/src/services/auth.service.ts
@@ -5,6 +5,7 @@ import { JWT_SECRET } from '../configs/envConfig'
 import Profile from '../entities/profile.entity'
 import { type CreateProfile, type ApiResponse } from '../types'
 import {
+  capitalizeFirstLetter,
   getPasswordChangedEmailContent,
   getPasswordResetEmailContent
 } from '../utils'
@@ -35,8 +36,8 @@ export const registerUser = async (
     const newProfile = profileRepository.create({
       primary_email: email,
       password: hashedPassword,
-      first_name,
-      last_name,
+      first_name: capitalizeFirstLetter(first_name),
+      last_name: capitalizeFirstLetter(last_name),
       image_url: ''
     })
 
diff --git a/src/services/mentee.service.ts b/src/services/mentee.service.ts
index c9912ff..d16c854 100644
--- a/src/services/mentee.service.ts
+++ b/src/services/mentee.service.ts
@@ -6,7 +6,8 @@ import { MenteeApplicationStatus } from '../enums'
 import {
   getEmailContent,
   getMentorNotifyEmailContent,
-  getMenteePublicData
+  getMenteePublicData,
+  capitalizeFirstLetter
 } from '../utils'
 import { sendEmail } from './admin/email.service'
 
@@ -78,6 +79,11 @@ export const addMentee = async (
       }
     }
 
+    application.firstName = capitalizeFirstLetter(
+      application.firstName as string
+    )
+    application.lastName = capitalizeFirstLetter(application.lastName as string)
+
     const newMentee = new Mentee(
       MenteeApplicationStatus.PENDING,
       application,
diff --git a/src/services/mentor.service.ts b/src/services/mentor.service.ts
index 9178fc5..dd7f4fa 100644
--- a/src/services/mentor.service.ts
+++ b/src/services/mentor.service.ts
@@ -5,7 +5,11 @@ import Mentor from '../entities/mentor.entity'
 import type Profile from '../entities/profile.entity'
 import { MentorApplicationStatus } from '../enums'
 import { type PaginatedApiResponse } from '../types'
-import { getEmailContent, getMentorPublicData } from '../utils'
+import {
+  capitalizeFirstLetter,
+  getEmailContent,
+  getMentorPublicData
+} from '../utils'
 import { sendEmail } from './admin/email.service'
 
 export const createMentor = async (
@@ -72,6 +76,11 @@ export const createMentor = async (
       }
     }
 
+    application.firstName = capitalizeFirstLetter(
+      application.firstName as string
+    )
+    application.lastName = capitalizeFirstLetter(application.lastName as string)
+
     const newMentor = new Mentor(
       MentorApplicationStatus.PENDING,
       category,
diff --git a/src/utils.ts b/src/utils.ts
index a7f30f6..839e423 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -286,3 +286,7 @@ export const getPasswordChangedEmailContent = (
     `
   }
 }
+
+export const capitalizeFirstLetter = (word: string): string => {
+  return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
+}