diff --git a/src/main/java/com/eactive/apim/portal/apps/user/dto/PortalOrgRegistrationDTO.java b/src/main/java/com/eactive/apim/portal/apps/user/dto/PortalOrgRegistrationDTO.java
index 1181062..c3ebe2d 100644
--- a/src/main/java/com/eactive/apim/portal/apps/user/dto/PortalOrgRegistrationDTO.java
+++ b/src/main/java/com/eactive/apim/portal/apps/user/dto/PortalOrgRegistrationDTO.java
@@ -30,11 +30,9 @@ public class PortalOrgRegistrationDTO extends PortalUserRegistrationDTO {
     private String orgName;
 
     //대표자 성명
-    @NotEmpty(message = "{field.required}")
     private String ceoName;
 
     //기관사업장소재지
-    @NotEmpty(message = "{field.required}")
     private String orgAddr;
 
     //기관업태
@@ -44,15 +42,12 @@ public class PortalOrgRegistrationDTO extends PortalUserRegistrationDTO {
     private String orgIndustryType;
 
     //서비스명
-    @NotEmpty(message = "{field.required}")
     private String serviceName;
 
     //고객센터연락처
-    @NotEmpty(message = "{field.required}")
     private String scPhoneNumber;
 
     //기관전화번호
-    @NotEmpty(message = "{field.required}")
     @PhoneNumber
     private String orgPhoneNumber;
 
diff --git a/src/main/java/com/eactive/apim/portal/apps/user/service/UserRegistrationValidationService.java b/src/main/java/com/eactive/apim/portal/apps/user/service/UserRegistrationValidationService.java
index 30fd379..ad6478b 100644
--- a/src/main/java/com/eactive/apim/portal/apps/user/service/UserRegistrationValidationService.java
+++ b/src/main/java/com/eactive/apim/portal/apps/user/service/UserRegistrationValidationService.java
@@ -24,17 +24,26 @@ public class UserRegistrationValidationService {
     }
 
     private boolean isValidOrgInfo(PortalOrgRegistrationDTO orgDTO) {
-        return basicValidationService.isValidBusinessNumber(orgDTO.getCompRegNo()) &&
-                basicValidationService.isValidCorpRegNo(orgDTO.getCorpRegNo()) &&
-                basicValidationService.isValidPhoneNumber(orgDTO.getOrgPhoneNumber()) &&
-                basicValidationService.isValidPhoneNumber(orgDTO.getScPhoneNumber());
+        // 사업자등록번호, 법인등록번호는 필수
+        if (!basicValidationService.isValidBusinessNumber(orgDTO.getCompRegNo()) ||
+                !basicValidationService.isValidCorpRegNo(orgDTO.getCorpRegNo())) {
+            return false;
+        }
+        // 회사 전화번호, 고객센터 전화번호는 선택 (입력된 경우에만 형식 검증)
+        if (basicValidationService.isNotEmpty(orgDTO.getOrgPhoneNumber()) &&
+                !basicValidationService.isValidPhoneNumber(orgDTO.getOrgPhoneNumber())) {
+            return false;
+        }
+        if (basicValidationService.isNotEmpty(orgDTO.getScPhoneNumber()) &&
+                !basicValidationService.isValidPhoneNumber(orgDTO.getScPhoneNumber())) {
+            return false;
+        }
+        return true;
     }
 
     private boolean isValidRequiredFields(PortalOrgRegistrationDTO orgDTO) {
-        return basicValidationService.isNotEmpty(orgDTO.getOrgName()) &&
-                basicValidationService.isNotEmpty(orgDTO.getCeoName()) &&
-                basicValidationService.isNotEmpty(orgDTO.getOrgAddr()) &&
-                basicValidationService.isNotEmpty(orgDTO.getServiceName());
+        // 법인명만 필수, 나머지(대표자 성명, 소재지, 서비스명)는 선택
+        return basicValidationService.isNotEmpty(orgDTO.getOrgName());
     }
 
     private boolean isValidIpWhitelistIfExists(PortalOrgRegistrationDTO orgDTO) {
diff --git a/src/main/resources/templates/views/apps/register/components/orgBasicInfoForm.html b/src/main/resources/templates/views/apps/register/components/orgBasicInfoForm.html
index 46359ec..419527d 100644
--- a/src/main/resources/templates/views/apps/register/components/orgBasicInfoForm.html
+++ b/src/main/resources/templates/views/apps/register/components/orgBasicInfoForm.html
@@ -60,12 +60,12 @@
   <!-- CEO Name -->
   <div class="org-form-group">
     <label class="org-form-label" for="ceoName">
-      대표자 성명 <span class="required-badge">필수</span>
+      대표자 성명
     </label>
     <div class="org-form-input-wrapper">
       <input type="text" class="org-form-input" id="ceoName" th:field="*{ceoName}"
              placeholder="대표자 성명을 입력하세요"
-             th:classappend="${#fields.hasErrors('ceoName')}? 'is-invalid'" required>
+             th:classappend="${#fields.hasErrors('ceoName')}? 'is-invalid'">
       <div th:if="${#fields.hasErrors('ceoName')}" class="org-validation-message error">
         <span th:errors="*{ceoName}"></span>
       </div>
@@ -75,12 +75,12 @@
   <!-- Business Address -->
   <div class="org-form-group">
     <label class="org-form-label" for="orgAddr">
-      사업장 소재지 <span class="required-badge">필수</span>
+      사업장 소재지
     </label>
     <div class="org-form-input-wrapper">
       <input type="text" class="org-form-input" id="orgAddr" th:field="*{orgAddr}"
              placeholder="사업장 소재지를 입력하세요"
-             th:classappend="${#fields.hasErrors('orgAddr')}? 'is-invalid'" required>
+             th:classappend="${#fields.hasErrors('orgAddr')}? 'is-invalid'">
       <div th:if="${#fields.hasErrors('orgAddr')}" class="org-validation-message error">
         <span th:errors="*{orgAddr}"></span>
       </div>
@@ -90,33 +90,33 @@
   <!-- Business Type -->
   <div class="org-form-group">
     <label class="org-form-label" for="orgSectors">
-      업태 <span class="required-badge">필수</span>
+      업태
     </label>
     <div class="org-form-input-wrapper">
       <input type="text" class="org-form-input" id="orgSectors" th:field="*{orgSectors}"
-             placeholder="업태를 입력하세요" required>
+             placeholder="업태를 입력하세요">
     </div>
   </div>
 
   <!-- Industry Type -->
   <div class="org-form-group">
     <label class="org-form-label" for="orgIndustryType">
-      업종 <span class="required-badge">필수</span>
+      업종
     </label>
     <div class="org-form-input-wrapper">
       <input type="text" class="org-form-input" id="orgIndustryType" th:field="*{orgIndustryType}"
-             placeholder="업종을 입력하세요" required>
+             placeholder="업종을 입력하세요">
     </div>
   </div>
 
   <!-- Company Phone Number -->
   <div class="org-form-group">
     <label class="org-form-label">
-      회사 전화번호 <span class="required-badge">필수</span>
+      회사 전화번호
     </label>
     <div class="org-form-input-wrapper">
       <div class="org-compound-input">
-        <select class="org-form-select" id="orgAreaCode" required>
+        <select class="org-form-select" id="orgAreaCode">
           <option value="">선택</option>
           <option value="국번없음">국번없음</option>
           <option value="02">02</option>
@@ -159,12 +159,12 @@
   <!-- Service Name -->
   <div class="org-form-group">
     <label class="org-form-label" for="serviceName">
-      서비스명 <span class="required-badge">필수</span>
+      서비스명
     </label>
     <div class="org-form-input-wrapper">
       <input type="text" class="org-form-input" id="serviceName" th:field="*{serviceName}"
              placeholder="서비스명을 입력하세요"
-             th:classappend="${#fields.hasErrors('serviceName')}? 'is-invalid'" required>
+             th:classappend="${#fields.hasErrors('serviceName')}? 'is-invalid'">
       <div th:if="${#fields.hasErrors('serviceName')}" class="org-validation-message error">
         <span th:errors="*{serviceName}"></span>
       </div>
@@ -174,11 +174,11 @@
   <!-- Customer Service Phone Number -->
   <div class="org-form-group">
     <label class="org-form-label">
-      고객센터 전화번호 <span class="required-badge">필수</span>
+      고객센터 전화번호
     </label>
     <div class="org-form-input-wrapper">
       <div class="org-compound-input">
-        <select class="org-form-select" id="scAreaCode" required>
+        <select class="org-form-select" id="scAreaCode">
           <option value="">선택</option>
           <option value="국번없음">국번없음</option>
           <option value="02">02</option>
@@ -265,8 +265,9 @@
       const part1 = document.getElementById(`${prefix}PhoneNumber1`).value.trim();
       const part2 = document.getElementById(`${prefix}PhoneNumber2`).value.trim();
 
-      // 회사 전화번호 검증
-      if (!areaCode || areaCode === '' || !part1 || !part2) {
+      // 전화번호는 선택 입력이므로, 일부만 입력된 경우에만 검증
+      const hasAnyInput = areaCode || part1 || part2;
+      if (hasAnyInput && (!areaCode || areaCode === '' || !part1 || !part2)) {
         customPopups.showAlert(`${prefix === 'org' ? '회사' : '고객센터'} 전화번호를 모두 입력해주세요.`);
         return false;
       }
diff --git a/src/main/resources/templates/views/apps/register/orgUserRegister.html b/src/main/resources/templates/views/apps/register/orgUserRegister.html
index 8b89596..aaca942 100644
--- a/src/main/resources/templates/views/apps/register/orgUserRegister.html
+++ b/src/main/resources/templates/views/apps/register/orgUserRegister.html
@@ -5,7 +5,7 @@
 <body>
 <section layout:fragment="title">
   <div class="page-title-banner">
-    <img th:src="@{/img/user_register_title.png}" alt="법인회원가입" class="title-image">
+    <img th:src="@{/img/img_title_bg.png}" alt="법인회원가입" class="title-image">
     <h1>법인회원가입</h1>
   </div>
 </section>
@@ -117,15 +117,15 @@
       const requiredFieldsByScenario = {
         new: {
           user: ['loginId', 'userName', 'password', 'password2', 'mobileNumber', 'authNumber'],
-          org: ['compRegNo', 'corpRegNo', 'orgName', 'ceoName', 'orgAddr', 'orgSectors', 'orgIndustryType', 'orgPhoneNumber', 'scPhoneNumber', 'serviceName', 'compRegFile', 'files']
+          org: ['compRegNo', 'corpRegNo', 'orgName', 'compRegFile', 'files']
         },
         retain: {
           user: ['loginId', 'passwordConfirmIndividual'],
-          org: ['compRegNo', 'corpRegNo', 'orgName', 'ceoName', 'orgAddr', 'orgSectors', 'orgIndustryType', 'orgPhoneNumber', 'scPhoneNumber', 'serviceName', 'compRegFile', 'files']
+          org: ['compRegNo', 'corpRegNo', 'orgName', 'compRegFile', 'files']
         },
         change: {
           user: ['loginId', 'passwordConfirmEmailChange', 'newLoginId'],
-          org: ['compRegNo', 'corpRegNo', 'orgName', 'ceoName', 'orgAddr', 'orgSectors', 'orgIndustryType', 'orgPhoneNumber', 'scPhoneNumber', 'serviceName', 'compRegFile', 'files']
+          org: ['compRegNo', 'corpRegNo', 'orgName', 'compRegFile', 'files']
         }
       };
 
@@ -344,11 +344,6 @@
           compRegNo: $('#compRegNo').val().trim() !== '',
           corpRegNo: $('#corpRegNo').val().trim() !== '',
           orgName: $('#orgName').val().trim() !== '',
-          ceoName: $('#ceoName').val().trim() !== '',
-          orgAddr: $('#orgAddr').val().trim() !== '',
-          orgPhoneNumber: $('#orgPhoneNumber').val().trim() !== '',
-          scPhoneNumber: $('#scPhoneNumber').val().trim() !== '',
-          serviceName: $('#serviceName').val().trim() !== '',
           compRegFile: $('#compRegFile').val().trim() !== ''
         };