diff --git a/TaxBaik.Application.Tests/InquiryServiceTests.cs b/TaxBaik.Application.Tests/InquiryServiceTests.cs
index b1875e6..9b1efc8 100644
--- a/TaxBaik.Application.Tests/InquiryServiceTests.cs
+++ b/TaxBaik.Application.Tests/InquiryServiceTests.cs
@@ -62,7 +62,7 @@ public class InquiryServiceTests
         public Task NotifyCreatedAsync(int inquiryId, string name, string phone, string serviceType, string message, string? ipAddress, DateTime createdAtUtc, CancellationToken ct = default)
             => Task.CompletedTask;
 
-        public Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, CancellationToken ct = default)
+        public Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, string? changedBy = null, CancellationToken ct = default)
             => Task.CompletedTask;
     }
 }
diff --git a/TaxBaik.Application/Services/IInquiryNotificationService.cs b/TaxBaik.Application/Services/IInquiryNotificationService.cs
index c55ffb7..eccd9a9 100644
--- a/TaxBaik.Application/Services/IInquiryNotificationService.cs
+++ b/TaxBaik.Application/Services/IInquiryNotificationService.cs
@@ -3,5 +3,5 @@ namespace TaxBaik.Application.Services;
 public interface IInquiryNotificationService
 {
     Task NotifyCreatedAsync(int inquiryId, string name, string phone, string serviceType, string message, string? ipAddress, DateTime createdAtUtc, CancellationToken ct = default);
-    Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, CancellationToken ct = default);
+    Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, string? changedBy = null, CancellationToken ct = default);
 }
diff --git a/TaxBaik.Application/Services/InquiryService.cs b/TaxBaik.Application/Services/InquiryService.cs
index b1566a4..930952e 100644
--- a/TaxBaik.Application/Services/InquiryService.cs
+++ b/TaxBaik.Application/Services/InquiryService.cs
@@ -46,7 +46,7 @@ public class InquiryService(IInquiryRepository repository, IInquiryNotificationS
         int page, int pageSize, string? status = null, CancellationToken ct = default) =>
         await repository.GetPagedAsync(NormalizePage(page), NormalizePageSize(pageSize), NormalizeOptionalStatus(status), ct);
 
-    public async Task UpdateStatusAsync(int id, string status, CancellationToken ct = default)
+    public async Task UpdateStatusAsync(int id, string status, string? changedBy = null, CancellationToken ct = default)
     {
         if (!InquiryStatusMapper.TryParse(status, out var parsed))
             throw new ValidationException("지원하지 않는 문의 상태입니다.");
@@ -59,7 +59,7 @@ public class InquiryService(IInquiryRepository repository, IInquiryNotificationS
         var newStatus = InquiryStatusMapper.ToStorageValue(parsed);
 
         await repository.UpdateStatusAsync(id, newStatus, ct);
-        await notificationService.NotifyStatusChangedAsync(id, inquiry.Name, inquiry.Phone, inquiry.ServiceType, previousStatus, newStatus, ct);
+        await notificationService.NotifyStatusChangedAsync(id, inquiry.Name, inquiry.Phone, inquiry.ServiceType, previousStatus, newStatus, changedBy, ct);
     }
 
     private static int NormalizePage(int page) => Math.Max(1, page);
diff --git a/TaxBaik.Application/Services/NoopInquiryNotificationService.cs b/TaxBaik.Application/Services/NoopInquiryNotificationService.cs
index 37e4765..f9af415 100644
--- a/TaxBaik.Application/Services/NoopInquiryNotificationService.cs
+++ b/TaxBaik.Application/Services/NoopInquiryNotificationService.cs
@@ -5,6 +5,6 @@ public sealed class NoopInquiryNotificationService : IInquiryNotificationService
     public Task NotifyCreatedAsync(int inquiryId, string name, string phone, string serviceType, string message, string? ipAddress, DateTime createdAtUtc, CancellationToken ct = default)
         => Task.CompletedTask;
 
-    public Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, CancellationToken ct = default)
+    public Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, string? changedBy = null, CancellationToken ct = default)
         => Task.CompletedTask;
 }
diff --git a/TaxBaik.Web/Components/Admin/Pages/Inquiries/InquiryDetail.razor b/TaxBaik.Web/Components/Admin/Pages/Inquiries/InquiryDetail.razor
index 2cffeca..16e9339 100644
--- a/TaxBaik.Web/Components/Admin/Pages/Inquiries/InquiryDetail.razor
+++ b/TaxBaik.Web/Components/Admin/Pages/Inquiries/InquiryDetail.razor
@@ -85,7 +85,7 @@ else
 
         try
         {
-            await InquiryService.UpdateStatusAsync(inquiry.Id, status);
+            await InquiryService.UpdateStatusAsync(inquiry.Id, status, "관리자");
             inquiry.Status = status;
             Snackbar.Add("상태가 변경되었습니다.", Severity.Success);
         }
diff --git a/TaxBaik.Web/Controllers/InquiryController.cs b/TaxBaik.Web/Controllers/InquiryController.cs
index 3283066..4ed1b03 100644
--- a/TaxBaik.Web/Controllers/InquiryController.cs
+++ b/TaxBaik.Web/Controllers/InquiryController.cs
@@ -1,5 +1,6 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using System.Security.Claims;
 using TaxBaik.Application.Services;
 
 namespace TaxBaik.Web.Controllers;
@@ -66,7 +67,8 @@ public class InquiryController : ControllerBase
 
         try
         {
-            await _inquiryService.UpdateStatusAsync(id, request.Status);
+            var changedBy = User.FindFirstValue(ClaimTypes.Name) ?? User.Identity?.Name;
+            await _inquiryService.UpdateStatusAsync(id, request.Status, changedBy);
             return Ok(new { message = "상태가 변경되었습니다." });
         }
         catch (ValidationException ex)
diff --git a/TaxBaik.Web/Services/TelegramInquiryNotificationService.cs b/TaxBaik.Web/Services/TelegramInquiryNotificationService.cs
index 54245ac..072563f 100644
--- a/TaxBaik.Web/Services/TelegramInquiryNotificationService.cs
+++ b/TaxBaik.Web/Services/TelegramInquiryNotificationService.cs
@@ -66,7 +66,7 @@ public class TelegramInquiryNotificationService : IInquiryNotificationService
         }
     }
 
-    public async Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, CancellationToken ct = default)
+    public async Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, string? changedBy = null, CancellationToken ct = default)
     {
         var botToken = _configuration["Telegram:BotToken"];
         var chatId = _configuration["Telegram:ChatId"];
@@ -82,6 +82,7 @@ public class TelegramInquiryNotificationService : IInquiryNotificationService
             .AppendLine($"이름: {name}")
             .AppendLine($"연락처: {phone}")
             .AppendLine($"상태: {FormatStatus(previousStatus)} -> {FormatStatus(newStatus)}")
+            .AppendLine($"변경자: {(string.IsNullOrWhiteSpace(changedBy) ? "-" : changedBy)}")
             .AppendLine()
             .AppendLine($"답변 목록 링크: {adminLink}")
             .ToString();