diff --git a/src/main/java/com/goorm/team9/icontact/domain/chat/dto/response/ChatRoomResponseDto.java b/src/main/java/com/goorm/team9/icontact/domain/chat/dto/response/ChatRoomResponseDto.java
index 974462b..5a1567e 100644
--- a/src/main/java/com/goorm/team9/icontact/domain/chat/dto/response/ChatRoomResponseDto.java
+++ b/src/main/java/com/goorm/team9/icontact/domain/chat/dto/response/ChatRoomResponseDto.java
@@ -19,6 +19,7 @@ public class ChatRoomResponseDto {
     private boolean exited;
     private Long otherId;
     private String otherUserNickname;
+    private Long lastSenderid;
 
     public static ChatRoomResponseDto fromEntity(ChatRoom chatRoom, Long unreadCount, boolean exited, Long myId) {
         boolean isSenderMe = chatRoom.getSender().getId().equals(myId);
@@ -31,6 +32,8 @@ public static ChatRoomResponseDto fromEntity(ChatRoom chatRoom, Long unreadCount
                 ? chatRoom.getReceiver().getNickName()
                 : chatRoom.getSender().getNickName();
 
+        Long lastSenderId = chatRoom.getLastSenderId();
+
         return new ChatRoomResponseDto(
                 chatRoom.getRoomId(),
                 List.of(chatRoom.getSender().getNickName(), chatRoom.getReceiver().getNickName()),
@@ -39,7 +42,8 @@ public static ChatRoomResponseDto fromEntity(ChatRoom chatRoom, Long unreadCount
                 unreadCount,
                 exited,
                 otherId,
-                otherUserNickname
+                otherUserNickname,
+                lastSenderId
         );
     }
 
diff --git a/src/main/java/com/goorm/team9/icontact/domain/chat/entity/ChatRoom.java b/src/main/java/com/goorm/team9/icontact/domain/chat/entity/ChatRoom.java
index bbf818b..a25094c 100644
--- a/src/main/java/com/goorm/team9/icontact/domain/chat/entity/ChatRoom.java
+++ b/src/main/java/com/goorm/team9/icontact/domain/chat/entity/ChatRoom.java
@@ -46,6 +46,9 @@ public class ChatRoom {
     @Column(name = "last_message_time")
     private LocalDateTime lastMessageTime;
 
+    @Column(name = "last_sender_id")
+    private Long lastSenderId;
+
     @OneToMany(mappedBy = "chatRoom", cascade = CascadeType.REMOVE, orphanRemoval = true)
     private List<ChatMessage> messages = new ArrayList<>();
 
@@ -55,12 +58,14 @@ public static ChatRoom createChatRoom(ClientEntity sender, ClientEntity receiver
         chatRoom.setReceiver(receiver);
         chatRoom.setLastMessage(null);
         chatRoom.setLastMessageTime(null);
+        chatRoom.setLastSenderId(null);
         return chatRoom;
     }
 
-    public void updateLastMessage(String lastMessage, LocalDateTime lastMessageTime) {
+    public void updateLastMessage(String lastMessage, LocalDateTime lastMessageTime, Long senderId) {
         this.lastMessage = lastMessage;
         this.lastMessageTime = lastMessageTime;
+        this.lastSenderId = senderId;
     }
 
 }
diff --git a/src/main/java/com/goorm/team9/icontact/domain/chat/service/ChatMessageService.java b/src/main/java/com/goorm/team9/icontact/domain/chat/service/ChatMessageService.java
index 5cea040..2a3f4ba 100644
--- a/src/main/java/com/goorm/team9/icontact/domain/chat/service/ChatMessageService.java
+++ b/src/main/java/com/goorm/team9/icontact/domain/chat/service/ChatMessageService.java
@@ -71,7 +71,7 @@ public void sendMessage(ChatMessageDto chatMessageDto) {
                 .build();
         chatMessageRepository.save(chatMessage);
 
-        chatRoom.updateLastMessage(chatMessage.getContent(), chatMessage.getCreated_at());
+        chatRoom.updateLastMessage(chatMessage.getContent(), chatMessage.getCreated_at(), sender.getId());
         chatRoomRepository.save(chatRoom);
 
         String destination = "/queue/" + chatMessageDto.getRoomId();