diff --git a/family/src/main/java/com/oing/domain/Family.java b/family/src/main/java/com/oing/domain/Family.java
index f441a954..8147db16 100644
--- a/family/src/main/java/com/oing/domain/Family.java
+++ b/family/src/main/java/com/oing/domain/Family.java
@@ -19,7 +19,7 @@ public class Family extends BaseEntity {
     @Column(name = "family_id", columnDefinition = "CHAR(26)", nullable = false)
     private String id;
 
-    @Column(name = "family_name", columnDefinition = "CHAR(10)")
+    @Column(name = "family_name", columnDefinition = "CHAR(9)")
     private String familyName;
 
     @Column(name = "family_name_editor_id", columnDefinition = "CHAR(26)")
@@ -105,7 +105,7 @@ public void updateFamilyName(String familyName, String loginFamilyId) {
     }
 
     private void validateFamilyName(String familyName) {
-        if ((familyName.codePoints().count() > 10) || familyName.isBlank()) {
+        if ((familyName.codePoints().count() > 9) || familyName.isBlank()) {
             throw new InvalidParameterException();
         }
     }
diff --git a/family/src/main/java/com/oing/dto/request/UpdateFamilyNameRequest.java b/family/src/main/java/com/oing/dto/request/UpdateFamilyNameRequest.java
index 2343a880..7b340615 100644
--- a/family/src/main/java/com/oing/dto/request/UpdateFamilyNameRequest.java
+++ b/family/src/main/java/com/oing/dto/request/UpdateFamilyNameRequest.java
@@ -6,7 +6,7 @@
 @Schema(description = "가족 이름 수정 요청")
 public record UpdateFamilyNameRequest(
 
-        @Size(max = 10)
+        @Size(max = 9)
         @Schema(description = "가족 이름", example = "오잉")
         String familyName
 ) {
diff --git a/family/src/test/java/com/oing/service/FamilyServiceTest.java b/family/src/test/java/com/oing/service/FamilyServiceTest.java
index e2f81c6f..9b0faa1d 100644
--- a/family/src/test/java/com/oing/service/FamilyServiceTest.java
+++ b/family/src/test/java/com/oing/service/FamilyServiceTest.java
@@ -51,9 +51,9 @@ public class FamilyServiceTest {
     }
 
     @Test
-    void 열_자_초과_가족_이름_수정_예외_검증() {
+    void 아홉_자_초과_가족_이름_수정_예외_검증() {
         // given
-        String newName = "wrong-length-name";
+        String newName = "wrong-length-nam";
         String memberId = "1";
         String familyId = "1";
 
diff --git a/gateway/src/main/resources/V202406261718__alter_family_name_column_type.sql b/gateway/src/main/resources/V202406261718__alter_family_name_column_type.sql
new file mode 100644
index 00000000..2bd6fed5
--- /dev/null
+++ b/gateway/src/main/resources/V202406261718__alter_family_name_column_type.sql
@@ -0,0 +1 @@
+ALTER TABLE `family` MODIFY `family_name` VARCHAR(9);