diff --git a/src/main/java/com/klaroworks/runtime/rolematrix/dto/Dtos.java b/src/main/java/com/klaroworks/runtime/rolematrix/dto/Dtos.java
new file mode 100644
index 0000000..2aa640e
--- /dev/null
+++ b/src/main/java/com/klaroworks/runtime/rolematrix/dto/Dtos.java
@@ -0,0 +1,46 @@
+package com.klaroworks.runtime.rolematrix.dto;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.klaroworks.runtime.rolematrix.domain.RoleMatrix;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
+import java.time.Instant;
+import java.util.List;
+
+/** 표준 오류 응답 DTO */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public record ErrorResponse(
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss'Z'", timezone = "UTC") Instant timestamp,
+    int status, String error, String code, String message, String path, String traceId
+) {
+    public static ErrorResponse of(int status, String code, String message, String path, String traceId) {
+        return new ErrorResponse(Instant.now(), status, resolveErrorName(status), code, message, path, traceId);
+    }
+    private static String resolveErrorName(int status) {
+        return switch (status) { case 400 -> "Bad Request"; case 404 -> "Not Found"; case 409 -> "Conflict"; case 500 -> "Internal Server Error"; default -> "Error"; };
+    }
+}
+
+/** 역할 매트릭스 생성 명령 */
+record CreateRoleMatrixCommand(
+    @NotBlank(message = "역할 매트릭스 이름은 필수입니다") @Size(max = 255) String name,
+    @Size(max = 1000) String description
+) {}
+
+/** 역할 매트릭스 수정 명령 */
+record UpdateRoleMatrixCommand(
+    @Size(max = 255) String name,
+    @Size(max = 1000) String description
+) {}
+
+/** 역할 매트릭스 응답 */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+record RoleMatrixResponse(
+    Long id, String name, String description, List<String> permissionIds, Instant createdAt, Instant updatedAt
+) {
+    public static RoleMatrixResponse from(RoleMatrix entity) {
+        return new RoleMatrixResponse(entity.getId(), entity.getName(), entity.getDescription(), entity.getPermissionIds(), entity.getCreatedAt(), entity.getUpdatedAt());
+    }
+}