diff --git a/modules/pubmaticBidAdapter.js b/modules/pubmaticBidAdapter.js
index eb2ad8ccb03..ce0da73f751 100644
--- a/modules/pubmaticBidAdapter.js
+++ b/modules/pubmaticBidAdapter.js
@@ -1194,6 +1194,15 @@ export const spec = {
       deepSetValue(payload, 'regs.ext.us_privacy', bidderRequest.uspConsent);
     }
 
+    // Attaching GPP Consent Params
+    if (bidderRequest?.gppConsent?.gppString) {
+      deepSetValue(payload, 'regs.gpp', bidderRequest.gppConsent.gppString);
+      deepSetValue(payload, 'regs.gpp_sid', bidderRequest.gppConsent.applicableSections);
+    } else if (bidderRequest?.ortb2?.regs?.gpp) {
+      deepSetValue(payload, 'regs.gpp', bidderRequest.ortb2.regs.gpp);
+      deepSetValue(payload, 'regs.gpp_sid', bidderRequest.ortb2.regs.gpp_sid);
+    }
+
     // coppa compliance
     if (config.getConfig('coppa') === true) {
       deepSetValue(payload, 'regs.coppa', 1);
@@ -1352,7 +1361,7 @@ export const spec = {
   /**
    * Register User Sync.
    */
-  getUserSyncs: (syncOptions, responses, gdprConsent, uspConsent) => {
+  getUserSyncs: (syncOptions, responses, gdprConsent, uspConsent, gppConsent) => {
     let syncurl = '' + publisherId;
 
     // Attaching GDPR Consent Params in UserSync url
@@ -1366,6 +1375,12 @@ export const spec = {
       syncurl += '&us_privacy=' + encodeURIComponent(uspConsent);
     }
 
+    // GPP Consent
+    if (gppConsent?.gppString && gppConsent?.applicableSections?.length) {
+      syncurl += '&gpp=' + encodeURIComponent(gppConsent.gppString);
+      syncurl += '&gpp_sid=' + encodeURIComponent(gppConsent?.applicableSections?.join(','));
+    }
+
     // coppa compliance
     if (config.getConfig('coppa') === true) {
       syncurl += '&coppa=1';
diff --git a/test/spec/modules/pubmaticBidAdapter_spec.js b/test/spec/modules/pubmaticBidAdapter_spec.js
index 5d8d762e793..53f5e12aa6d 100644
--- a/test/spec/modules/pubmaticBidAdapter_spec.js
+++ b/test/spec/modules/pubmaticBidAdapter_spec.js
@@ -3057,6 +3057,76 @@ describe('PubMatic adapter', function () {
         });
       }
 
+      describe('GPP', function() {
+        it('Request params check with GPP Consent', function () {
+          let bidRequest = {
+            gppConsent: {
+              'gppString': 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN',
+              'fullGppData': {
+                'sectionId': 3,
+                'gppVersion': 1,
+                'sectionList': [
+                  5,
+                  7
+                ],
+                'applicableSections': [
+                  5
+                ],
+                'gppString': 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN',
+                'pingData': {
+                  'cmpStatus': 'loaded',
+                  'gppVersion': '1.0',
+                  'cmpDisplayStatus': 'visible',
+                  'supportedAPIs': [
+                    'tcfca',
+                    'usnat',
+                    'usca',
+                    'usva',
+                    'usco',
+                    'usut',
+                    'usct'
+                  ],
+                  'cmpId': 31
+                },
+                'eventName': 'sectionChange'
+              },
+              'applicableSections': [
+                5
+              ],
+              'apiVersion': 1
+            }
+          };
+          let request = spec.buildRequests(bidRequests, bidRequest);
+          let data = JSON.parse(request.data);
+          expect(data.regs.gpp).to.equal('DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN');
+          expect(data.regs.gpp_sid[0]).to.equal(5);
+        });
+
+        it('Request params check without GPP Consent', function () {
+          let bidRequest = {};
+          let request = spec.buildRequests(bidRequests, bidRequest);
+          let data = JSON.parse(request.data);
+          expect(data.regs).to.equal(undefined);
+        });
+
+        it('Request params check with GPP Consent read from ortb2', function () {
+          let bidRequest = {
+            ortb2: {
+              regs: {
+                'gpp': 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN',
+                'gpp_sid': [
+                  5
+                ]
+              }
+            }
+          };
+          let request = spec.buildRequests(bidRequests, bidRequest);
+          let data = JSON.parse(request.data);
+          expect(data.regs.gpp).to.equal('DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN');
+          expect(data.regs.gpp_sid[0]).to.equal(5);
+        });
+      });
+
       describe('Fledge', function() {
         it('should not send imp.ext.ae when FLEDGE is disabled, ', function () {
           let bidRequest = Object.assign([], bidRequests);
@@ -3991,6 +4061,55 @@ describe('PubMatic adapter', function () {
           type: 'image', url: `${syncurl_image}&gdpr=1&gdpr_consent=foo&us_privacy=1NYN&coppa=1`
         }]);
       });
+
+      describe('GPP', function() {
+        it('should return userSync url without Gpp consent if gppConsent is undefined', () => {
+          const result = spec.getUserSyncs({iframeEnabled: true}, undefined, undefined, undefined, undefined);
+          expect(result).to.deep.equal([{
+            type: 'iframe', url: `${syncurl_iframe}`
+          }]);
+        });
+
+        it('should return userSync url without Gpp consent if gppConsent.gppString is undefined', () => {
+          const gppConsent = { applicableSections: ['5'] };
+          const result = spec.getUserSyncs({iframeEnabled: true}, undefined, undefined, undefined, gppConsent);
+          expect(result).to.deep.equal([{
+            type: 'iframe', url: `${syncurl_iframe}`
+          }]);
+        });
+
+        it('should return userSync url without Gpp consent if gppConsent.applicableSections is undefined', () => {
+          const gppConsent = { gppString: 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN' };
+          const result = spec.getUserSyncs({iframeEnabled: true}, undefined, undefined, undefined, gppConsent);
+          expect(result).to.deep.equal([{
+            type: 'iframe', url: `${syncurl_iframe}`
+          }]);
+        });
+
+        it('should return userSync url without Gpp consent if gppConsent.applicableSections is an empty array', () => {
+          const gppConsent = { gppString: 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN', applicableSections: [] };
+          const result = spec.getUserSyncs({iframeEnabled: true}, undefined, undefined, undefined, gppConsent);
+          expect(result).to.deep.equal([{
+            type: 'iframe', url: `${syncurl_iframe}`
+          }]);
+        });
+
+        it('should concatenate gppString and applicableSections values in the returned userSync iframe url', () => {
+          const gppConsent = { gppString: 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN', applicableSections: [5] };
+          const result = spec.getUserSyncs({iframeEnabled: true}, undefined, undefined, undefined, gppConsent);
+          expect(result).to.deep.equal([{
+            type: 'iframe', url: `${syncurl_iframe}&gpp=${encodeURIComponent(gppConsent.gppString)}&gpp_sid=${encodeURIComponent(gppConsent.applicableSections)}`
+          }]);
+        });
+
+        it('should concatenate gppString and applicableSections values in the returned userSync image url', () => {
+          const gppConsent = { gppString: 'DBACNYA~CPXxRfAPXxRfAAfKABENB-CgAAAAAAAAAAYgAAAAAAAA~1YNN', applicableSections: [5] };
+          const result = spec.getUserSyncs({iframeEnabled: false}, undefined, undefined, undefined, gppConsent);
+          expect(result).to.deep.equal([{
+            type: 'image', url: `${syncurl_image}&gpp=${encodeURIComponent(gppConsent.gppString)}&gpp_sid=${encodeURIComponent(gppConsent.applicableSections)}`
+          }]);
+        });
+      });
     });
 
     if (FEATURES.VIDEO) {