diff --git a/src/main/java/org/runnect/server/common/resolver/userId/UserIdResolver.java b/src/main/java/org/runnect/server/common/resolver/userId/UserIdResolver.java
index 55770c6..cedff32 100644
--- a/src/main/java/org/runnect/server/common/resolver/userId/UserIdResolver.java
+++ b/src/main/java/org/runnect/server/common/resolver/userId/UserIdResolver.java
@@ -4,6 +4,7 @@
 import org.runnect.server.common.constant.TokenStatus;
 import org.runnect.server.common.constant.ErrorStatus;
 import lombok.RequiredArgsConstructor;
+import org.slf4j.MDC;
 import org.runnect.server.common.module.check.TypeChecker;
 import org.runnect.server.user.exception.authException.InvalidAccessTokenException;
 import org.runnect.server.user.exception.authException.NullAccessTokenException;
@@ -76,6 +77,7 @@ public Object resolveArgument(@NotNull MethodParameter parameter, ModelAndViewCo
                 && request.getMethod().equals("GET")
                 && VISITOR_POSSIBLE_URLS.contains(removeLastPathSegment(request.getRequestURI()))){
             // 방문자모드 허용 api에 대한 요청이 맞는지 검증
+            MDC.put("userId", String.valueOf(VISITOR_ID));
             return VISITOR_ID;
         }
 
@@ -92,7 +94,9 @@ public Object resolveArgument(@NotNull MethodParameter parameter, ModelAndViewCo
         final String tokenContents = jwtService.getJwtContents(accessToken);
 
         try {
-            return Long.parseLong(tokenContents);
+            Long userId = Long.parseLong(tokenContents);
+            MDC.put("userId", String.valueOf(userId));
+            return userId;
         } catch (NumberFormatException e) {
             throw new NotFoundUserException(ErrorStatus.NOT_FOUND_USER_EXCEPTION, ErrorStatus.NOT_FOUND_USER_EXCEPTION.getMessage());
         }
diff --git a/src/main/java/org/runnect/server/config/logging/MdcLoggingFilter.java b/src/main/java/org/runnect/server/config/logging/MdcLoggingFilter.java
index d7fe4a3..9d90126 100644
--- a/src/main/java/org/runnect/server/config/logging/MdcLoggingFilter.java
+++ b/src/main/java/org/runnect/server/config/logging/MdcLoggingFilter.java
@@ -1,6 +1,9 @@
 package org.runnect.server.config.logging;
 
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.runnect.server.common.constant.TokenStatus;
+import org.runnect.server.config.jwt.JwtService;
 import org.slf4j.MDC;
 import org.springframework.stereotype.Component;
 
@@ -17,13 +20,21 @@
  * 요청마다 traceId를 발급해 MDC에 담아둔다.
  * 로그 패턴에 %X{traceId}를 포함시키면(logback-spring.xml), 여러 요청이 뒤섞인 로그에서도
  * 같은 traceId로 특정 요청의 흐름만 추적할 수 있다.
+ *
+ * userId는 @UserId 파라미터가 없는 요청(토큰 재발급, 배너 등)에서도 로그에 남도록
+ * 여기서 best-effort로 한 번 더 채운다. 실제 인증 검증/방문자 모드 처리는 UserIdResolver가
+ * 맡고, 그 결과가 이후 이 값을 덮어쓴다.
  */
 @Slf4j
 @Component
+@RequiredArgsConstructor
 public class MdcLoggingFilter implements Filter {
 
     private static final String TRACE_ID_KEY = "traceId";
     private static final int TRACE_ID_LENGTH = 8;
+    private static final String USER_ID_KEY = "userId";
+
+    private final JwtService jwtService;
 
     @Override
     public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
@@ -32,10 +43,26 @@ public void doFilter(ServletRequest request, ServletResponse response, FilterCha
         try {
             MDC.put(TRACE_ID_KEY, traceId);
             HttpServletRequest httpRequest = (HttpServletRequest) request;
+            populateUserIdBestEffort(httpRequest);
             log.info("{} {}", httpRequest.getMethod(), httpRequest.getRequestURI());
             chain.doFilter(request, response);
         } finally {
             MDC.remove(TRACE_ID_KEY);
+            MDC.remove(USER_ID_KEY);
+        }
+    }
+
+    private void populateUserIdBestEffort(HttpServletRequest request) {
+        String accessToken = request.getHeader("accessToken");
+        if (accessToken == null) {
+            return;
+        }
+        try {
+            if (jwtService.verifyToken(accessToken) == TokenStatus.TOKEN_VALID) {
+                MDC.put(USER_ID_KEY, jwtService.getJwtContents(accessToken));
+            }
+        } catch (RuntimeException e) {
+            // 로깅 목적의 best-effort 파싱이므로 실패해도 요청 처리는 계속 진행한다.
         }
     }
 }
diff --git a/src/main/resources/logback-spring.xml b/src/main/resources/logback-spring.xml
index 81b0490..3a1dba5 100644
--- a/src/main/resources/logback-spring.xml
+++ b/src/main/resources/logback-spring.xml
@@ -3,7 +3,7 @@
 
     <property name="LOG_DIR" value="./logs"/>
     <property name="LOG_PATTERN"
-              value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%X{traceId}] %-5level [%thread] %logger{36} - %msg%n"/>
+              value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%X{traceId}] [userId=%X{userId}] %-5level [%thread] %logger{36} - %msg%n"/>
 
     <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>