diff --git a/3p/integration-lib.js b/3p/integration-lib.js
index bd48df027bc2..5076d6ed8440 100644
--- a/3p/integration-lib.js
+++ b/3p/integration-lib.js
@@ -48,7 +48,6 @@ const AMP_EMBED_ALLOWED = {
   myua: true,
   mywidget: true,
   nativery: true,
-  lentainform: true,
   opinary: true,
   outbrain: true,
   plista: true,
diff --git a/3p/integration.js b/3p/integration.js
index 908c601391cb..99d75510a309 100644
--- a/3p/integration.js
+++ b/3p/integration.js
@@ -158,7 +158,6 @@ import {ketshwa} from '#ads/vendors/ketshwa';
 import {kiosked} from '#ads/vendors/kiosked';
 import {kixer} from '#ads/vendors/kixer';
 import {kuadio} from '#ads/vendors/kuadio';
-import {lentainform} from '#ads/vendors/lentainform';
 import {ligatus} from '#ads/vendors/ligatus';
 import {lockerdome} from '#ads/vendors/lockerdome';
 import {logly} from '#ads/vendors/logly';
@@ -448,7 +447,6 @@ register('ketshwa', ketshwa);
 register('kiosked', kiosked);
 register('kixer', kixer);
 register('kuadio', kuadio);
-register('lentainform', lentainform);
 register('ligatus', ligatus);
 register('lockerdome', lockerdome);
 register('logly', logly);
diff --git a/3p/vendors/lentainform.js b/3p/vendors/lentainform.js
deleted file mode 100644
index 88b18c1081e4..000000000000
--- a/3p/vendors/lentainform.js
+++ /dev/null
@@ -1,12 +0,0 @@
-// src/polyfills.js must be the first import.
-import '#3p/polyfills';
-
-import {register} from '#3p/3p';
-import {draw3p, init} from '#3p/integration-lib';
-
-import {lentainform} from '#ads/vendors/lentainform';
-
-init(window);
-register('lentainform', lentainform);
-
-window.draw3p = draw3p;
diff --git a/ads/_config.js b/ads/_config.js
index 97a05243f224..81fb78ac60c1 100755
--- a/ads/_config.js
+++ b/ads/_config.js
@@ -743,15 +743,6 @@ const adConfig = jsonConfiguration({
 
   'kuadio': {},
 
-  'lentainform': {
-    renderStartImplemented: true,
-    preconnect: [
-      'https://jsc.lentainform.com',
-      'https://servicer.lentainform.com',
-      'https://s-img.lentainform.com',
-    ],
-  },
-
   'ligatus': {
     prefetch: 'https://ssl.ligatus.com/render/ligrend.js',
     renderStartImplemented: true,
diff --git a/ads/vendors/lentainform.js b/ads/vendors/lentainform.js
deleted file mode 100644
index 7e012cc01fc7..000000000000
--- a/ads/vendors/lentainform.js
+++ /dev/null
@@ -1,39 +0,0 @@
-import {loadScript, validateData} from '#3p/3p';
-
-/**
- * @param {!Window} global
- * @param {!Object} data
- */
-export function lentainform(global, data) {
-  validateData(data, ['publisher', 'widget', 'container'], ['url', 'options']);
-
-  const scriptRoot = document.createElement('div');
-  scriptRoot.id = data.container;
-
-  document.body.appendChild(scriptRoot);
-
-  const publisherStr = data.publisher.replace(/[^a-zA-Z0-9]/g, '');
-
-  const url =
-    `https://jsc.lentainform.com/${encodeURIComponent(publisherStr[0])}/` +
-    `${encodeURIComponent(publisherStr[1])}/` +
-    `${encodeURIComponent(data.publisher)}.` +
-    `${encodeURIComponent(data.widget)}.js?t=` +
-    Math.floor(Date.now() / 36e5);
-
-  global.uniqId = (
-    '00000' + Math.round(Math.random() * 100000).toString(16)
-  ).slice(-5);
-  window['ampOptions' + data.widget + '_' + global.uniqId] = data.options;
-
-  global.context.observeIntersection(function (changes) {
-    /** @type {!Array} */ (changes).forEach(function (c) {
-      window['intersectionRect' + data.widget + '_' + global.uniqId] =
-        c.intersectionRect;
-      window['boundingClientRect' + data.widget + '_' + global.uniqId] =
-        c.boundingClientRect;
-    });
-  });
-
-  loadScript(global, data.url || url);
-}
diff --git a/ads/vendors/lentainform.md b/ads/vendors/lentainform.md
deleted file mode 100644
index ef5acac84e51..000000000000
--- a/ads/vendors/lentainform.md
+++ /dev/null
@@ -1,32 +0,0 @@
-# Lentainform
-
-## Example
-
-### Basic
-
-```html
-<amp-embed
-  width="100"
-  height="283"
-  type="lentainform"
-  data-publisher="amp-demo"
-  data-widget="12345"
-  data-container="demo-container"
->
-</amp-embed>
-```
-
-## Configuration
-
-For details on the configuration semantics, please contact the ad network or refer to their documentation.
-
-### Required parameters
-
--   `data-publisher`
--   `data-widget`
--   `data-container`
-
-### Optional parameters
-
--   `data-url`
--   `data-options`
diff --git a/examples/amp-ad/ads.amp.esm.html b/examples/amp-ad/ads.amp.esm.html
index 5408d4685971..acf9a3d07bf1 100644
--- a/examples/amp-ad/ads.amp.esm.html
+++ b/examples/amp-ad/ads.amp.esm.html
@@ -182,7 +182,6 @@
         <option>kiosked</option>
         <option>kixer</option>
         <option>kuadio</option>
-        <option>lentainform</option>
         <option>ligatus</option>
         <option>lockerdome</option>
         <option>logly</option>
@@ -1444,14 +1443,6 @@ <h2>Kuadio</h2>
     data-widget-id="78a32765-30f1-4ac1-a3e7-b42ebc6df88a">
   </amp-embed>
 
-  <h2>Lentainform</h2>
-  <amp-ad width="600" height="320"
-          type="lentainform"
-          data-publisher="test.exhange.noidpartners.com"
-          data-widget="689383"
-          data-container="M246626ScriptRootC689383">
-  </amp-ad>
-
   <h2>Ligatus</h2>
   <amp-ad width="300" height="250"
       type="ligatus"
diff --git a/examples/amp-ad/ads.amp.html b/examples/amp-ad/ads.amp.html
index cca3bb15eb51..1ded4e80128c 100644
--- a/examples/amp-ad/ads.amp.html
+++ b/examples/amp-ad/ads.amp.html
@@ -303,7 +303,6 @@
         <option>kiosked</option>
         <option>kixer</option>
         <option>kuadio</option>
-        <option>lentainform</option>
         <option>ligatus</option>
         <option>lockerdome</option>
         <option>logly</option>
@@ -1288,11 +1287,6 @@ <h2>Kuadio</h2>
     data-widget-id="78a32765-30f1-4ac1-a3e7-b42ebc6df88a">
   </amp-embed>
 
-  <h2>Lentainform</h2>
-  <amp-ad width="600" height="320" type="lentainform" data-publisher="test.exhange.noidpartners.com"
-    data-widget="689383" data-container="M246626ScriptRootC689383">
-  </amp-ad>
-
   <h2>Ligatus</h2>
   <amp-ad width="300" height="250" type="ligatus" src="https://a-ssl.ligatus.com/?ids=88443&t=js&s=1&bc=2">
   </amp-ad>
diff --git a/extensions/amp-ad/amp-ad.md b/extensions/amp-ad/amp-ad.md
index 170ba5536bdf..5625cd5c0de3 100644
--- a/extensions/amp-ad/amp-ad.md
+++ b/extensions/amp-ad/amp-ad.md
@@ -533,7 +533,6 @@ See [amp-ad rules](validator-amp-ad.protoascii) in the AMP validator specificati
 -   [Idealmedia](../../ads/vendors/idealmedia.md)
 -   [Insticator](../../ads/vendors/insticator.md)
 -   [Jubna](../../ads/vendors/jubna.md)
--   [Lentainform](../../ads/vendors/lentainform.md)
 -   [Mgid](../../ads/vendors/mgid.md)
 -   [Myua](../../ads/vendors/myua.md)
 -   [Outbrain](../../ads/vendors/outbrain.md)