diff --git a/BE/src/stock/order/stock-order.controller.ts b/BE/src/stock/order/stock-order.controller.ts
index e7696bb4..82d72083 100644
--- a/BE/src/stock/order/stock-order.controller.ts
+++ b/BE/src/stock/order/stock-order.controller.ts
@@ -1,6 +1,8 @@
 import {
   Body,
   Controller,
+  Delete,
+  Param,
   Post,
   Req,
   UseGuards,
@@ -57,4 +59,22 @@ export class StockOrderController {
   ) {
     await this.stockTradeService.sell(request.user.id, stockOrderRequest);
   }
+
+  @Delete('/:order_id')
+  @ApiBearerAuth()
+  @UseGuards(JwtAuthGuard)
+  @ApiOperation({
+    summary: '주식 매도/매수 취소 API',
+    description: '주문 id로 미체결된 주문을 취소한다.',
+  })
+  @ApiResponse({
+    status: 200,
+    description: '주식 매도/매수 취소 성공',
+  })
+  async cancel(
+    @Req() request: RequestInterface,
+    @Param('order_id') orderId: number,
+  ) {
+    await this.stockTradeService.cancel(request.user.id, orderId);
+  }
 }
diff --git a/BE/src/stock/order/stock-order.service.ts b/BE/src/stock/order/stock-order.service.ts
index a5c2cbba..3b5e7e07 100644
--- a/BE/src/stock/order/stock-order.service.ts
+++ b/BE/src/stock/order/stock-order.service.ts
@@ -1,3 +1,9 @@
+import {
+  ConflictException,
+  ForbiddenException,
+  Injectable,
+} from '@nestjs/common';
+import { NotFoundError } from 'rxjs';
 import { Injectable } from '@nestjs/common';
 import { StockOrderRequestDto } from './dto/stock-order-request.dto';
 import { StockOrderRepository } from './stock-order.repository';
@@ -33,4 +39,18 @@ export class StockOrderService {
 
     await this.stockOrderRepository.save(order);
   }
+
+  async cancel(userId: number, orderId: number) {
+    const order = await this.stockOrderRepository.findOneBy({ id: orderId });
+
+    if (!order) throw new NotFoundError('주문을 찾을 수 없습니다.');
+
+    if (order.user_id !== userId)
+      throw new ForbiddenException('다른 사용자의 주문은 취소할 수 없습니다.');
+
+    if (order.status === StatusType.COMPLETE)
+      throw new ConflictException('이미 체결된 주문은 취소할 수 없습니다.');
+
+    await this.stockOrderRepository.remove(order);
+  }
 }