diff --git a/.env.example b/.env.example
index 01068e1..a4fde60 100644
--- a/.env.example
+++ b/.env.example
@@ -5,10 +5,3 @@ DB_USERNAME=<your_username>
 DB_PASSWORD=<your_password>
 
 JWT_SECRET_KEY=<SECRET_KEY>
-
-# =============================
-# PortOne
-# =============================
-PORTONE_API_SECRET=V2_API_Secret
-PORTONE_STORE_ID=store-ID
-PORTONE_CHANNEL_KEY=channel-key-
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 3491256..68c9df3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,9 +48,6 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-security'
     testImplementation 'org.springframework.security:spring-security-test'
 
-    // OAuth2
-    implementation 'org.springframework.boot:spring-boot-starter-oauth2-client'
-
     implementation 'io.github.openfeign.querydsl:querydsl-jpa:6.10.1'
     annotationProcessor 'io.github.openfeign.querydsl:querydsl-apt:6.10.1:jakarta'
     annotationProcessor 'jakarta.annotation:jakarta.annotation-api'
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 31e7935..bea2dbd 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -6,45 +6,16 @@ spring:
     active: ${SPRING_PROFILES_ACTIVE:local}  # .env 또는 환경변수로 override 가능, 기본값 local
   jpa:
     open-in-view: false
-  security:
-    oauth2:
-      client:
-        registration:
-          google:
-            client-id: ${GOOGLE_CLIENT_ID}
-            client-secret: ${GOOGLE_CLIENT_SECRET}
-            scope: email, profile
-          kakao:
-            client-id: ${KAKAO_CLIENT_ID}
-            client-secret: ${KAKAO_CLIENT_SECRET}
-            client-authentication-method: client_secret_post
-            authorization-grant-type: authorization_code
-            redirect-uri: "{baseUrl}/login/oauth2/code/kakao"
-            scope: profile_nickname, account_email
-        provider:
-          kakao:
-            authorization-uri: https://kauth.kakao.com/oauth/authorize
-            token-uri: https://kauth.kakao.com/oauth/token
-            user-info-uri: https://kapi.kakao.com/v2/user/me
-            user-name-attribute: id
   data:
     redis:
       host: ${REDIS_HOST:localhost}
       port: ${REDIS_PORT:6379}
 
-portone:
-  api-secret: ${PORTONE_API_SECRET}
-  store-id: ${PORTONE_STORE_ID}
-  channel-key: ${PORTONE_CHANNEL_KEY}
-
 jwt:
   secret-key: ${JWT_SECRET_KEY}
   access-token-validity-time: 1800000     # 30분 (ms)
   refresh-token-validity-time: 604800000 # 7일 (ms)
 
-oauth2:
-  redirect-uri: http://localhost:3000/oauth2/callback
-
 management:
   endpoints:
     web:
diff --git a/src/main/resources/templates/checkout.html b/src/main/resources/templates/checkout.html
index 3d1021e..0f570ca 100644
--- a/src/main/resources/templates/checkout.html
+++ b/src/main/resources/templates/checkout.html
@@ -47,13 +47,13 @@ <h2 class="checkout-block-title">주문 상품</h2>
                         <div class="checkout-info-content" id="orderer-info">
                             <!-- 미등록 상태 -->
                             <div class="checkout-info-empty" id="orderer-empty">
-                                <p class="checkout-info-name" id="orderer-name" th:text="${orderer?.name ?: '박경화'}">박경화</p>
+                                <p class="checkout-info-name" id="orderer-name" th:text="${orderer?.name ?: '르탄이'}">르탄이</p>
                                 <p class="checkout-info-hint" id="orderer-hint">주문자를 등록해주세요.</p>
                                 <button class="checkout-register-btn" id="btn-register-orderer">등록</button>
                             </div>
                             <!-- 등록 완료 상태 (숨김) -->
                             <div class="checkout-info-filled" id="orderer-filled" style="display:none;">
-                                <p class="checkout-info-name" id="orderer-filled-name">박경화</p>
+                                <p class="checkout-info-name" id="orderer-filled-name">르탄이</p>
                                 <p class="checkout-info-detail" id="orderer-filled-email">example@gmail.com</p>
                                 <p class="checkout-info-detail" id="orderer-filled-phone">01012345678</p>
                                 <button class="checkout-change-btn" id="btn-change-orderer">변경</button>