diff --git a/adapters.json b/adapters.json
index e9a65ac4fa6..89a3c3f66be 100644
--- a/adapters.json
+++ b/adapters.json
@@ -54,6 +54,7 @@
     "vertoz",
     "widespace",
     "admixer",
+    "atomx",
     "tapsense",
     {
       "appnexus": {
diff --git a/integrationExamples/gpt/pbjs_example_gpt.html b/integrationExamples/gpt/pbjs_example_gpt.html
index 19f4e6cc8a0..5f3b25e1303 100644
--- a/integrationExamples/gpt/pbjs_example_gpt.html
+++ b/integrationExamples/gpt/pbjs_example_gpt.html
@@ -249,6 +249,12 @@
                         params: {
                             zone: '2eb6bd58-865c-47ce-af7f-a918108c3fd2' // REQUIRED zone oid
                         }
+                    },
+                    {
+                        bidder: 'atomx',
+                        params: {
+                            id: 7395
+                        }
                     }
                 ]
             }, {
diff --git a/src/adapters/atomx.js b/src/adapters/atomx.js
new file mode 100644
index 00000000000..4935382123a
--- /dev/null
+++ b/src/adapters/atomx.js
@@ -0,0 +1,75 @@
+var CONSTANTS = require('../constants.json');
+var bidfactory = require('../bidfactory.js');
+var bidmanager = require('../bidmanager.js');
+var adloader = require('src/adloader.js');
+var Ajax = require('../ajax');
+var utils = require('../utils.js');
+
+/**
+ * Adapter for requesting bids from Atomx.
+ *
+ * @returns {{callBids: _callBids, responseCallback: _responseCallback}}
+ */
+var AtomxAdapter = function AtomxAdapter() {
+  function _callBids(data) {
+    if (!window.atomx_prebid) {
+      adloader.loadScript(window.location.protocol + '//s.ato.mx/b.js', function() { _bid(data); }, true);
+    } else {
+      _bid(data);
+    }
+  }
+
+  function _bid(data) {
+    var url = window.atomx_prebid();
+    var bids = data.bids || [];
+    for (var i = 0, ln = bids.length; i < ln; i++) {
+      var bid = bids[i];
+      if (bid.params && bid.params.id) {
+        Ajax.ajax(url, _responseCallback.bind(this, bid), {
+          id: bid.params.id,
+          size: utils.parseSizesInput(bid.sizes)[0],
+          prebid: bid.placementCode
+        }, {method: 'GET'});
+      } else {
+        var bidObject = bidfactory.createBid(CONSTANTS.STATUS.NO_BID, bid);
+        bidObject.bidderCode = 'atomx';
+        bidmanager.addBidResponse(bid.placementCode, bidObject);
+      }
+    }
+  }
+
+  function _responseCallback(bid, data) {
+    var bidObject;
+    try {
+      data = JSON.parse(data);
+
+      if (data.cpm && data.cpm > 0) {
+        bidObject = bidfactory.createBid(CONSTANTS.STATUS.GOOD, bid);
+        bidObject.bidderCode = 'atomx';
+        bidObject.cpm = data.cpm * 1000;
+        if (data.adm) {
+          bidObject.ad = data.adm;
+        } else {
+          bidObject.adUrl = data.url;
+        }
+        bidObject.width = data.width;
+        bidObject.height = data.height;
+        bidmanager.addBidResponse(bid.placementCode, bidObject);
+        return;
+      }
+    } catch (_error) {
+      utils.logError(_error);
+    }
+
+    bidObject = bidfactory.createBid(CONSTANTS.STATUS.NO_BID, bid);
+    bidObject.bidderCode = 'atomx';
+    bidmanager.addBidResponse(bid.placementCode, bidObject);
+  }
+
+  return {
+    callBids: _callBids,
+    responseCallback: _responseCallback
+  };
+};
+
+module.exports = AtomxAdapter;
diff --git a/test/spec/adapters/atomx_spec.js b/test/spec/adapters/atomx_spec.js
new file mode 100644
index 00000000000..fb4bdc83f1b
--- /dev/null
+++ b/test/spec/adapters/atomx_spec.js
@@ -0,0 +1,151 @@
+window.pbjs = window.pbjs || {};
+var chai = require('chai');
+var Adapter = require('src/adapters/atomx')();
+var Ajax = require('src/ajax');
+var adLoader = require('src/adloader');
+var bidmanager = require('src/bidmanager.js');
+var CONSTANTS = require('src/constants.json');
+
+describe('Atomx adapter', function () {
+  var validData_1 = {
+    bids: [
+      {
+        bidder: 'atomx',
+        bidId: 'bid_id',
+        params: {id: 1234},
+        placementCode: 'ad-unit-1',
+        sizes: [[300, 250],[800, 600]]
+      }
+    ]
+  };
+  var validData_2 = {
+    bids: [
+      {
+        bidder: 'adtomx',
+        bidId: 'bid_id',
+        params: {id: 5678},
+        placementCode: 'ad-unit-1',
+        sizes: [300, 250]
+      }
+    ]
+  };
+
+  var invalidData = {
+    bids: [
+      {
+        bidder: 'atomx',
+        bidId: 'bid_id',
+        params: {},
+        placementCode: 'ad-unit-1',
+        sizes: [[300, 250]]
+      }
+    ]
+  };
+
+  var responseWithAd = JSON.stringify({
+    'cpm': 2.2,
+    'url': 'http://p.ato.mx/placement?id=1234',
+    'width': 300,
+    'height': 250,
+    'code': 'ad-unit-1'
+  });
+  var responseWithoutAd = JSON.stringify({
+    'cpm': 0,
+    'url': 'http://p.ato.mx/placement?id=1234',
+    'width': 300,
+    'height': 250,
+		'code': 'ad-unit-1'
+  });
+
+  var responseEmpty = '';
+  var validJsonParams = {
+    id: '1234',
+    prebid: 'ad-unit-1',
+    size: '300x250'
+  };
+
+  describe('loads the tag code', function() {
+    var stubLoadScript = sinon.stub(adLoader, "loadScript");
+    Adapter.callBids(validData_1);
+    sinon.assert.calledOnce(stubLoadScript);
+    let url = stubLoadScript.firstCall.args[0];
+    let callback = stubLoadScript.firstCall.args[1];
+    expect(url).to.equal('http://s.ato.mx/b.js');
+    expect(callback).to.be.a('function');
+  });
+  describe('bid request with valid data', function () {
+    var stubAjax;
+    beforeEach(function () {
+      window.atomx_prebid = function() {
+        return '/placement';
+      };
+      stubAjax = sinon.stub(Ajax, 'ajax');
+    });
+    afterEach(function () {
+      stubAjax.restore();
+    });
+    it('bid request should be called. sizes style -> [[],[]]', function () {
+      Adapter.callBids(validData_1);
+      sinon.assert.calledOnce(stubAjax);
+    });
+    it('bid request should be called. sizes style -> []', function () {
+      Adapter.callBids(validData_2);
+      sinon.assert.calledOnce(stubAjax);
+    });
+    it('ajax params should be matched', function () {
+      Adapter.callBids(validData_1);
+      sinon.assert.calledWith(stubAjax, sinon.match('/placement', function () {
+      }, validJsonParams, {method: "GET"}));
+    });
+  });
+  describe('bid request with invalid data', function () {
+    var addBidResponse, stubAjax;
+    beforeEach(function () {
+      window.atomx_prebid = function() {
+        return '/placement';
+      };
+      addBidResponse = sinon.stub(bidmanager, 'addBidResponse');
+      stubAjax = sinon.stub(Ajax, 'ajax');
+    });
+    afterEach(function () {
+      addBidResponse.restore();
+      stubAjax.restore();
+    });
+    it('ajax shouldn\'t be called', function () {
+      Adapter.callBids(invalidData);
+      sinon.assert.notCalled(stubAjax);
+    });
+    it('bidmanager.addBidResponse status code must to be equal "' + CONSTANTS.STATUS.NO_BID + '"', function () {
+      Adapter.callBids(invalidData);
+      expect(addBidResponse.firstCall.args[1].getStatusCode()).to.equal(CONSTANTS.STATUS.NO_BID);
+      expect(addBidResponse.firstCall.args[1].bidderCode).to.equal('atomx');
+    });
+  });
+  describe('bid response', function () {
+    var addBidResponse;
+    beforeEach(function () {
+      addBidResponse = sinon.stub(bidmanager, 'addBidResponse');
+    });
+    afterEach(function () {
+      addBidResponse.restore();
+    });
+    it('with ad. bidmanager.addBidResponse status code must to be equal "' + CONSTANTS.STATUS.GOOD + '"', function () {
+      Adapter.responseCallback(validData_1.bids[0], responseWithAd);
+      var arg = addBidResponse.firstCall.args[1];
+      expect(arg.getStatusCode()).to.equal(CONSTANTS.STATUS.GOOD);
+      expect(arg.bidderCode).to.equal('atomx');
+    });
+    it('without ad. bidmanager.addBidResponse status code must to be equal "' + CONSTANTS.STATUS.NO_BID, function () {
+      Adapter.responseCallback(validData_1.bids[0], responseWithoutAd);
+      var arg = addBidResponse.firstCall.args[1];
+      expect(arg.getStatusCode()).to.equal(CONSTANTS.STATUS.NO_BID);
+      expect(arg.bidderCode).to.equal('atomx');
+    });
+    it('empty. bidmanager.addBidResponse status code must to be equal "' + CONSTANTS.STATUS.NO_BID, function () {
+      Adapter.responseCallback(validData_1.bids[0], responseEmpty);
+      var arg = addBidResponse.firstCall.args[1];
+      expect(arg.getStatusCode()).to.equal(CONSTANTS.STATUS.NO_BID);
+      expect(arg.bidderCode).to.equal('atomx');
+    })
+  });
+});