diff --git a/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp b/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp
index 6212201..5fc9ed6 100644
--- a/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp
+++ b/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp
@@ -20,6 +20,16 @@
 	<jsp:include page="/jsp/common/include/css.jsp"/>
 	<jsp:include page="/jsp/common/include/script.jsp"/>
 	<jsp:include page="/jsp/common/include/portal.jsp"/>
+	<style>
+		.jnotification {
+			position: fixed;
+			top: 20px;
+			left: 50%;
+			transform: translateX(-50%);
+			right: auto;
+			bottom: auto;
+		}
+	</style>
 
 	<script language="javascript" >
 		var url      = '<c:url value="/onl/apim/portalorg/portalOrgMan.json" />';
@@ -394,6 +404,47 @@
 				downloadFile(fileId, '1');  // fileSn은 '1'로 가정
 			});
 
+			// OBP 파트너코드 조회 버튼 클릭
+			$("#btn_query_obp").click(function() {
+				var compRegNo = $("#compRegNo").val();
+				if (!compRegNo) {
+					jSuites.notification({ name: '알림', message: '사업자등록번호를 먼저 입력해주세요.', error: true });
+					$("#compRegNo").focus();
+					return;
+				}
+
+				// 하이픈 제거
+				compRegNo = compRegNo.replace(/-/g, '');
+
+				$.ajax({
+					type: "POST",
+					url: url,
+					dataType: "json",
+					data: {
+						cmd: 'QUERY_OBP_PARTNER_CODE',
+						compRegNo: compRegNo
+					},
+					beforeSend: function() {
+						$("#btn_query_obp").prop("disabled", true).html('<i class="material-icons">hourglass_empty</i> 조회중...');
+					},
+					success: function(json) {
+						if (json.success) {
+							$("#orgCode").val(json.partnerCode);
+							jSuites.notification({ name: '성공', message: '파트너코드가 조회되었습니다: ' + json.partnerCode });
+						} else {
+							jSuites.notification({ name: '실패', message: json.message, error: true });
+						}
+					},
+					error: function(e) {
+						jSuites.notification({ name: '오류', message: '파트너코드 조회 중 오류가 발생했습니다.', error: true });
+						console.error(e.responseText);
+					},
+					complete: function() {
+						$("#btn_query_obp").prop("disabled", false).html('<i class="material-icons">search</i> 파트너코드 조회');
+					}
+				});
+			});
+
 			$("#btn_modify").click(function(){
 				if (!checkRequired("ajaxForm")) return;
 
@@ -564,7 +615,10 @@
 				<tr>
 					<th style="width:15%;"><%= getRequiredLabel(localeMessage.getString("portalOrg.orgCode")) %></th>
 					<td colspan="3" style="width:35%;">
-						<input type="text" name="orgCode" id="orgCode" readonly/>
+						<div style="display: flex; align-items: center;">
+							<input type="text" name="orgCode" id="orgCode" style="width: 200px; margin-right: 10px;"/>
+							<button type="button" class="cssbtn smallBtn" id="btn_query_obp"><i class="material-icons">search</i> 파트너코드 조회</button>
+						</div>
 					</td>
 					<th><%= localeMessage.getString("portalOrg.orgIndustryType") %></th> <%--업종--%>
 					<td><input type="text" name="orgIndustryType" id="orgIndustryType" maxlength="50" /></td>
diff --git a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/ObpPartnerCodeService.java b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/ObpPartnerCodeService.java
new file mode 100644
index 0000000..38d186c
--- /dev/null
+++ b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/ObpPartnerCodeService.java
@@ -0,0 +1,66 @@
+package com.eactive.eai.rms.onl.apim.portalorg;
+
+import com.eactive.eai.rms.data.entity.man.monitoringProperty.service.MonitoringPropertyService;
+import com.eactive.ext.kjb.common.KjbObpException;
+import com.eactive.ext.kjb.common.KjbProperty;
+import com.eactive.ext.kjb.obp.KjbObpModule;
+import com.eactive.ext.kjb.util.KjbPropertyInjector;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * OBP 파트너코드 조회 서비스
+ */
+@Slf4j
+@Service
+public class ObpPartnerCodeService {
+    private static final String PROP_GROUP_ID = "Monitoring";
+
+    private final KjbPropertyInjector kjbPropertyInjector;
+
+    @Autowired
+    public ObpPartnerCodeService(MonitoringPropertyService monitoringPropertyService) {
+        this.kjbPropertyInjector = new KjbPropertyInjector(monitoringPropertyService, PROP_GROUP_ID);
+    }
+
+    /**
+     * 사업자등록번호로 OBP 파트너코드 조회
+     * @param compRegNo 사업자등록번호
+     * @return 조회 결과 (success, partnerCode 또는 message)
+     */
+    public Map<String, Object> queryPartnerCode(String compRegNo) {
+        Map<String, Object> result = new HashMap<>();
+
+        try {
+            KjbProperty prop = kjbPropertyInjector.inject(new KjbProperty());
+            KjbObpModule obpModule = KjbObpModule.getInstance(prop);
+
+            String partnerCode = obpModule.queryPartnerCode(compRegNo);
+
+            result.put("success", true);
+            result.put("partnerCode", partnerCode);
+            log.info("[OBP] 파트너코드 조회 성공 - compRegNo: {}, partnerCode: {}", compRegNo, partnerCode);
+
+        } catch (IllegalArgumentException e) {
+            log.warn("[OBP] 파트너코드 조회 실패 - 잘못된 입력: {}", e.getMessage());
+            result.put("success", false);
+            result.put("message", e.getMessage());
+
+        } catch (KjbObpException e) {
+            log.warn("[OBP] 파트너코드 조회 실패 - OBP 오류: {}", e.getMessage());
+            result.put("success", false);
+            result.put("message", "OBP 조회 실패: " + e.getMessage());
+
+        } catch (Exception e) {
+            log.error("[OBP] 파트너코드 조회 중 오류 발생", e);
+            result.put("success", false);
+            result.put("message", "시스템 오류가 발생했습니다.");
+        }
+
+        return result;
+    }
+}
diff --git a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java
index 809e32b..7ead8f3 100644
--- a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java
+++ b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java
@@ -13,6 +13,7 @@ import java.util.stream.Collectors;
 
 import com.eactive.eai.rms.onl.common.exception.BizException;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -25,13 +26,16 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestParam;
 
+@Slf4j
 @Controller
 @RequiredArgsConstructor
 public class PortalOrgManController extends BaseAnnotationController {
 
     private final PortalOrgManService portalOrgManService;
     private final ComboService comboService;
+    private final ObpPartnerCodeService obpPartnerCodeService;
 
     @GetMapping(value = "/onl/apim/portalorg/portalOrgMan.view")
     public void view() {
@@ -104,4 +108,15 @@ public class PortalOrgManController extends BaseAnnotationController {
         return ResponseEntity.ok(new GridResponse<>(page));
     }
 
+    /**
+     * OBP 파트너코드 조회
+     * @param compRegNo 사업자등록번호
+     * @return partnerCode
+     */
+    @PostMapping(value = "/onl/apim/portalorg/portalOrgMan.json", params = "cmd=QUERY_OBP_PARTNER_CODE")
+    public ResponseEntity<Map<String, Object>> queryObpPartnerCode(@RequestParam("compRegNo") String compRegNo) {
+        Map<String, Object> result = obpPartnerCodeService.queryPartnerCode(compRegNo);
+        return ResponseEntity.ok(result);
+    }
+
 }