diff --git a/src/client.ts b/src/client.ts
index 8c9ae91..4fd927a 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -2,6 +2,8 @@ import { NeisRequest } from './http'
 import type {
   AcaInsTiInfoParam,
   AcaInsTiInfoResponse,
+  ElsTimetableParam,
+  ElsTimetableResponse,
   MealServiceDietInfoParam,
   MealServiceDietInfoResponse,
   NeisConfig,
@@ -57,4 +59,16 @@ export class Neis extends NeisRequest {
   ): Promise<AcaInsTiInfoResponse> {
     return (await this.acaInsTiInfoRaw(params))[0]
   }
+
+  async getElsTimetable(
+    params: ElsTimetableParam
+  ): Promise<ElsTimetableResponse[]> {
+    return await this.elsTimetableRaw(params)
+  }
+
+  async getElsTimetableOne(
+    params: ElsTimetableParam
+  ): Promise<ElsTimetableResponse> {
+    return (await this.elsTimetableRaw(params))[0]
+  }
 }
diff --git a/src/http.ts b/src/http.ts
index 0f5ecba..e8330e3 100644
--- a/src/http.ts
+++ b/src/http.ts
@@ -1,6 +1,8 @@
 import type {
   AcaInsTiInfoParam,
   AcaInsTiInfoResponse,
+  ElsTimetableParam,
+  ElsTimetableResponse,
   MealServiceDietInfoParam,
   MealServiceDietInfoResponse,
   NeisConfig,
@@ -100,6 +102,16 @@ export class NeisRequest {
     )
   }
 
+  protected async elsTimetableRaw(
+    params: ElsTimetableParam
+  ): Promise<ElsTimetableResponse[]> {
+    return await this.request<ElsTimetableResponse>(
+      'GET',
+      'elsTimetable',
+      params
+    )
+  }
+
   private async request<T>(
     method: string,
     endpoint: string,
diff --git a/src/types.ts b/src/types.ts
index 058b37a..18dc755 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -13,6 +13,13 @@ export interface NeisConfig {
   readonly logger?: Logger<unknown>
 }
 
+interface RequiresSchoolParam {
+  /** 시도교육청코드 */
+  readonly ATPT_OFCDC_SC_CODE: string
+  /** 표준학교코드 */
+  readonly SD_SCHUL_CODE: string
+}
+
 export interface SchoolInfoParam {
   /** 시도교육청코드 */
   readonly ATPT_OFCDC_SC_CODE?: string
@@ -28,11 +35,7 @@ export interface SchoolInfoParam {
   readonly FOND_SC_NM?: string
 }
 
-export interface MealServiceDietInfoParam {
-  /** 시도교육청코드 */
-  readonly ATPT_OFCDC_SC_CODE: string
-  /** 표준학교코드 */
-  readonly SD_SCHUL_CODE: string
+export interface MealServiceDietInfoParam extends RequiresSchoolParam {
   /** 식사코드 */
   readonly MMEAL_SC_CODE?: string
   /** 급식일자 */
@@ -43,11 +46,7 @@ export interface MealServiceDietInfoParam {
   readonly MLSV_TO_YMD?: string
 }
 
-export interface SchoolScheduleParam {
-  /** 시도교육청코드 */
-  readonly ATPT_OFCDC_SC_CODE: string
-  /** 표준학교코드 */
-  readonly SD_SCHUL_CODE: string
+export interface SchoolScheduleParam extends RequiresSchoolParam {
   /** 주야과정명 */
   readonly DGHT_CRSE_SC_NM?: string
   /** 학교과정명 */
@@ -77,13 +76,33 @@ export interface AcaInsTiInfoParam {
   readonly LE_CRSE_NM?: string
 }
 
+export interface ElsTimetableParam extends RequiresSchoolParam {
+  /** 학년도 */
+  readonly AY?: string
+  /** 학기 */
+  readonly SEM?: string
+  /** 시간표일자 */
+  readonly ALL_TI_YMD?: string
+  /** 학년 */
+  readonly GRADE?: string
+  /** 반명 */
+  readonly CLASS_NM?: string
+  /** 교시 */
+  readonly PERIO?: string
+  /** 시간표시작일자 */
+  readonly TI_FROM_YMD?: string
+  /** 시간표종료일자 */
+  readonly TI_TO_YMD?: string
+}
+
 export type Params =
   | SchoolInfoParam
   | MealServiceDietInfoParam
   | SchoolScheduleParam
   | AcaInsTiInfoParam
+  | ElsTimetableParam
 
-interface SchoolBaseResponse {
+interface BaseSchoolResponse {
   /** 시도교육청코드 */
   readonly ATPT_OFCDC_SC_CODE: string
   /** 시도교육청명 */
@@ -94,7 +113,7 @@ interface SchoolBaseResponse {
   readonly SCHUL_NM: string
 }
 
-export interface SchoolInfoResponse extends SchoolBaseResponse {
+export interface SchoolInfoResponse extends BaseSchoolResponse {
   /** 영문학교명 */
   readonly ENG_SCHUL_NM: string
   /** 학교종류명 */
@@ -139,7 +158,7 @@ export interface SchoolInfoResponse extends SchoolBaseResponse {
   readonly LOAD_DTM: string
 }
 
-export interface MealServiceDietInfoResponse extends SchoolBaseResponse {
+export interface MealServiceDietInfoResponse extends BaseSchoolResponse {
   /** 식사코드 */
   readonly MMEAL_SC_CODE: string
   /** 식사명 */
@@ -162,7 +181,7 @@ export interface MealServiceDietInfoResponse extends SchoolBaseResponse {
   readonly MLSV_TO_YMD: string
 }
 
-export interface SchoolScheduleResponse extends SchoolBaseResponse {
+export interface SchoolScheduleResponse extends BaseSchoolResponse {
   /** 학년도 */
   readonly AY: string
   /** 주야과정명 */
@@ -243,3 +262,22 @@ export interface AcaInsTiInfoResponse {
   /** 수정일 */
   readonly LOAD_DTM: string
 }
+
+export interface ElsTimetableResponse extends BaseSchoolResponse {
+  /** 학년도 */
+  readonly AY: string
+  /** 학기 */
+  readonly SEM: string
+  /** 시간표일자 */
+  readonly ALL_TI_YMD: string
+  /** 학년 */
+  readonly GRADE: string
+  /** 반명 */
+  readonly CLASS_NM: string
+  /** 교시 */
+  readonly PERIO: string
+  /** 수업내용 */
+  readonly ITRT_CNTNT: string
+  /** 수정일 */
+  readonly LOAD_DTM: string
+}
diff --git a/tests/constants.ts b/tests/constants.ts
index 424bd55..da8c880 100644
--- a/tests/constants.ts
+++ b/tests/constants.ts
@@ -2,3 +2,5 @@ export const AE = 'B10'
 export const AN = '3000037367'
 export const SE = '7010057'
 export const YMD = '20230302'
+
+export const ELS = '7091414'
diff --git a/tests/timetable.test.ts b/tests/timetable.test.ts
new file mode 100644
index 0000000..1a4c9fd
--- /dev/null
+++ b/tests/timetable.test.ts
@@ -0,0 +1,28 @@
+import type { ElsTimetableResponse } from '../src'
+import { AE, ELS, YMD } from './constants'
+import { neis } from './utils'
+
+describe('Timetable', () => {
+  it('should return ElsTimetableResponse[]', async () => {
+    const data = await neis.getElsTimetable({
+      ATPT_OFCDC_SC_CODE: AE,
+      SD_SCHUL_CODE: ELS,
+      ALL_TI_YMD: YMD,
+    })
+
+    expect(data).toMatchObject<ElsTimetableResponse[]>(data)
+  })
+
+  it('should return ElsTimetableResponse', async () => {
+    const data = await neis.getElsTimetableOne({
+      ATPT_OFCDC_SC_CODE: AE,
+      SD_SCHUL_CODE: ELS,
+      ALL_TI_YMD: YMD,
+      GRADE: '1',
+      CLASS_NM: '1',
+      PERIO: '1',
+    })
+
+    expect(data).toMatchObject<ElsTimetableResponse>(data)
+  })
+})