diff --git a/modules/undertoneBidAdapter.js b/modules/undertoneBidAdapter.js
new file mode 100644
index 00000000000..1fe139d6fbe
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+++ b/modules/undertoneBidAdapter.js
@@ -0,0 +1,73 @@
+/**
+ * Adapter to send bids to Undertone
+ */
+
+import * as utils from 'src/utils';
+import { registerBidder } from 'src/adapters/bidderFactory';
+
+const BIDDER_CODE = 'undertone';
+const URL = '//hb.undertone.com/hb';
+
+export const spec = {
+  code: BIDDER_CODE,
+  isBidRequestValid: function(bid) {
+    if (bid && bid.params && bid.params.publisherId && bid.params.placementId) {
+      bid.params.publisherId = parseInt(bid.params.publisherId);
+      return true;
+    }
+  },
+  buildRequests: function(validBidRequests) {
+    const payload = {
+      'x-ut-hb-params': []
+    };
+    const host = utils.getTopWindowLocation().host;
+    const domain = /[-\w]+\.(?:[-\w]+\.xn--[-\w]+|[-\w]{3,}|[-\w]+\.[-\w]{2})$/i.exec(host);
+
+    const pubid = validBidRequests[0].params.publisherId;
+    const REQ_URL = `${URL}?pid=${pubid}&domain=${domain}`;
+
+    validBidRequests.map(bidReq => {
+      const bid = {
+        bidRequestId: bidReq.bidId,
+        hbadaptor: 'prebid',
+        domain: domain,
+        placementId: bidReq.params.placementId,
+        publisherId: bidReq.params.publisherId,
+        sizes: bidReq.sizes,
+        params: bidReq.params
+      };
+      payload['x-ut-hb-params'].push(bid);
+    });
+    return {
+      method: 'POST',
+      url: REQ_URL,
+      withCredentials: true,
+      data: JSON.stringify(payload)
+    };
+  },
+  interpretResponse: function(serverResponse, request) {
+    const bids = [];
+    const body = serverResponse.body;
+
+    if (body && Array.isArray(body) && body.length > 0) {
+      body.forEach((bidRes) => {
+        if (bidRes.ad && bidRes.cpm > 0) {
+          const bid = {
+            requestId: bidRes.bidRequestId,
+            cpm: bidRes.cpm,
+            width: bidRes.width,
+            height: bidRes.height,
+            creativeId: bidRes.adId,
+            currency: bidRes.currency,
+            netRevenue: bidRes.netRevenue,
+            ttl: bidRes.ttl,
+            ad: bidRes.ad
+          };
+          bids.push(bid);
+        }
+      });
+    }
+    return bids;
+  }
+};
+registerBidder(spec);
diff --git a/modules/undertoneBidAdapter.md b/modules/undertoneBidAdapter.md
new file mode 100644
index 00000000000..8ac84b77bd8
--- /dev/null
+++ b/modules/undertoneBidAdapter.md
@@ -0,0 +1,29 @@
+# Overview
+
+```
+Module Name: Example Bidder Adapter
+Module Type: Bidder Adapter
+Maintainer: RampProgrammatic@perion.com
+```
+# Description
+
+Module that connects to Undertone's demand sources
+
+# Test Parameters
+```
+    var adUnits = [
+       {
+         code: 'test-div',
+         sizes: [[300, 250]],
+         bids: [
+           {
+             bidder: "undertone",
+             params: {
+               placementId: '10433394',
+               publisherId: 12345
+               }
+           }
+         ]
+       }
+    ];
+```
diff --git a/test/spec/modules/undertoneBidAdapter_spec.js b/test/spec/modules/undertoneBidAdapter_spec.js
new file mode 100644
index 00000000000..dab9cea98bf
--- /dev/null
+++ b/test/spec/modules/undertoneBidAdapter_spec.js
@@ -0,0 +1,140 @@
+import { expect } from 'chai';
+import { spec } from 'modules/undertoneBidAdapter';
+
+const URL = '//hb.undertone.com/hb';
+const BIDDER_CODE = 'undertone';
+const validBidReq = {
+  bidder: BIDDER_CODE,
+  params: {
+    placementId: '10433394',
+    publisherId: 12345
+  },
+  sizes: [[300, 250], [300, 600]],
+  bidId: '263be71e91dd9d',
+  requestId: '9ad1fa8d-2297-4660-a018-b39945054746',
+  auctionId: '1d1a030790a475'
+};
+
+const invalidBidReq = {
+  bidder: BIDDER_CODE,
+  params: {
+    placementId: '123456789'
+  },
+  sizes: [[300, 250], [300, 600]],
+  bidId: '263be71e91dd9d',
+  requestId: '9ad1fa8d-2297-4660-a018-b39945054746'
+};
+
+const bidReq = [{
+  bidder: BIDDER_CODE,
+  params: {
+    placementId: '10433394',
+    publisherId: 12345
+  },
+  sizes: [[300, 250], [300, 600]],
+  bidId: '263be71e91dd9d',
+  requestId: '9ad1fa8d-2297-4660-a018-b39945054746',
+  auctionId: '1d1a030790a475'
+}];
+
+const validBidRes = {
+  ad: '<div>Hello</div>',
+  publisherId: 12345,
+  bidRequestId: '263be71e91dd9d',
+  adId: 15,
+  cpm: 100,
+  nCampaignId: 2,
+  creativeId: '123abc',
+  currency: 'USD',
+  netRevenue: true,
+  width: 300,
+  height: 250,
+  ttl: 360
+};
+
+const bidResponse = [validBidRes];
+
+const bidResArray = [
+  validBidRes,
+  {
+    ad: '',
+    bidRequestId: '263be71e91dd9d',
+    cpm: 100,
+    adId: '123abc',
+    currency: 'USD',
+    netRevenue: true,
+    width: 300,
+    height: 250,
+    ttl: 360
+  },
+  {
+    ad: '<div>Hello</div>',
+    bidRequestId: '',
+    cpm: 0,
+    adId: '123abc',
+    currency: 'USD',
+    netRevenue: true,
+    width: 300,
+    height: 250,
+    ttl: 360
+  }
+];
+
+describe('Undertone Adapter', () => {
+  describe('request', () => {
+    it('should validate bid request', () => {
+      expect(spec.isBidRequestValid(validBidReq)).to.equal(true);
+    });
+    it('should not validate incorrect bid request', () => {
+      expect(spec.isBidRequestValid(invalidBidReq)).to.equal(undefined);
+    });
+  });
+  describe('build request', () => {
+    it('should send request to correct url via POST', () => {
+      const request = spec.buildRequests(bidReq);
+      const domain = null;
+      const REQ_URL = `${URL}?pid=${bidReq[0].params.publisherId}&domain=${domain}`;
+      expect(request.url).to.equal(REQ_URL);
+      expect(request.method).to.equal('POST');
+    });
+    it('should have all relevant fields', () => {
+      const request = spec.buildRequests(bidReq);
+      const bid = JSON.parse(request.data)['x-ut-hb-params'][0];
+      expect(bid.bidRequestId).to.equal('263be71e91dd9d');
+      expect(bid.sizes.length > 0).to.equal(true);
+      expect(bid.placementId).to.equal('10433394');
+      expect(bid.publisherId).to.equal(12345);
+      expect(bid.params).to.be.an('object');
+    });
+  });
+
+  describe('interpretResponse', () => {
+    it('should build bid array', () => {
+      let result = spec.interpretResponse({body: bidResponse});
+      expect(result.length).to.equal(1);
+    });
+
+    it('should have all relevant fields', () => {
+      const result = spec.interpretResponse({body: bidResponse});
+      const bid = result[0];
+
+      expect(bid.requestId).to.equal('263be71e91dd9d');
+      expect(bid.cpm).to.equal(100);
+      expect(bid.width).to.equal(300);
+      expect(bid.height).to.equal(250);
+      expect(bid.creativeId).to.equal(15);
+      expect(bid.currency).to.equal('USD');
+      expect(bid.netRevenue).to.equal(true);
+      expect(bid.ttl).to.equal(360);
+    });
+
+    it('should return empty array when response is incorrect', () => {
+      expect(spec.interpretResponse({body: {}}).length).to.equal(0);
+      expect(spec.interpretResponse({body: []}).length).to.equal(0);
+    });
+
+    it('should only use valid bid responses', () => {
+      expect(spec.interpretResponse({ body: bidResArray }).length).to.equal(1);
+    });
+  });
+});