diff --git a/modules/tpmnBidAdapter.js b/modules/tpmnBidAdapter.js
new file mode 100644
index 00000000000..081638c0adb
--- /dev/null
+++ b/modules/tpmnBidAdapter.js
@@ -0,0 +1,120 @@
+/* eslint-disable no-tabs */
+import { registerBidder } from '../src/adapters/bidderFactory';
+import * as utils from '../src/utils';
+import { BANNER } from '../src/mediaTypes';
+import {parse as parseUrl} from '../src/url';
+
+export const ADAPTER_VERSION = '1';
+const SUPPORTED_AD_TYPES = [BANNER];
+
+const BIDDER_CODE = 'tpmn';
+const URL = 'https://ad.tpmn.co.kr/prebidhb.tpmn';
+
+export const spec = {
+  code: BIDDER_CODE,
+  supportedMediaTypes: SUPPORTED_AD_TYPES,
+  /**
+   *Determines whether or not the given bid request is valid.
+   *
+   * @param {object} bid The bid to validate.
+   * @return boolean True if this is a valid bid, and false otherwise.
+   */
+  isBidRequestValid: function(bid) {
+    return 'params' in bid &&
+    'inventoryId' in bid.params &&
+    'publisherId' in bid.params &&
+    !isNaN(Number(bid.params.inventoryId)) &&
+    bid.params.inventoryId > 0 &&
+    (typeof bid.mediaTypes.banner.sizes != 'undefined'); // only accepting appropriate sizes
+  },
+
+  /**
+	 * @param {BidRequest[]} bidRequests
+	 * @param {*} bidderRequest
+	 * @return {ServerRequest}
+	 */
+  buildRequests: (bidRequests, bidderRequest) => {
+    if (bidRequests.length === 0) {
+      return [];
+    }
+    const bids = bidRequests.map(bidToRequest);
+    const bidderApiUrl = URL;
+    const payload = {
+      'bids': [...bids],
+      'site': createSite(bidderRequest.refererInfo)
+    };
+    return [{
+      method: 'POST',
+      url: bidderApiUrl,
+      data: payload
+    }];
+  },
+  /**
+	 * Unpack the response from the server into a list of bids.
+	 *
+	 * @param {serverResponse} serverResponse A successful response from the server.
+	 * @return {Bid[]} An array of bids which were nested inside the server.
+	 */
+  interpretResponse: function (serverResponse, serverRequest) {
+    if (!Array.isArray(serverResponse.body)) {
+      return [];
+    }
+    // server response body is an array of bid results
+    const bidResults = serverResponse.body;
+    // our server directly returns the format needed by prebid.js so no more
+    // transformation is needed here.
+    return bidResults;
+  }
+};
+
+registerBidder(spec);
+
+/**
+ * Creates site description object
+ */
+function createSite(refInfo) {
+  let url = parseUrl(refInfo.referer);
+  let site = {
+    'domain': url.hostname,
+    'page': url.protocol + '://' + url.hostname + url.pathname
+  };
+  if (self === top && document.referrer) {
+    site.ref = document.referrer;
+  }
+  let keywords = document.getElementsByTagName('meta')['keywords'];
+  if (keywords && keywords.content) {
+    site.keywords = keywords.content;
+  }
+  return site;
+}
+
+function parseSize(size) {
+  let sizeObj = {}
+  sizeObj.width = parseInt(size[0], 10);
+  sizeObj.height = parseInt(size[1], 10);
+  return sizeObj;
+}
+
+function parseSizes(sizes) {
+  if (Array.isArray(sizes[0])) { // is there several sizes ? (ie. [[728,90],[200,300]])
+    return sizes.map(size => parseSize(size));
+  }
+  return [parseSize(sizes)]; // or a single one ? (ie. [728,90])
+}
+
+function getBannerSizes(bidRequest) {
+  return parseSizes(utils.deepAccess(bidRequest, 'mediaTypes.banner.sizes') || bidRequest.sizes);
+}
+
+function bidToRequest(bid) {
+  const bidObj = {};
+  bidObj.sizes = getBannerSizes(bid);
+
+  bidObj.inventoryId = bid.params.inventoryId;
+  bidObj.publisherId = bid.params.publisherId;
+  bidObj.bidId = bid.bidId;
+  bidObj.adUnitCode = bid.adUnitCode;
+  bidObj.auctionId = bid.auctionId;
+
+  return bidObj;
+}
diff --git a/modules/tpmnBidAdapter.md b/modules/tpmnBidAdapter.md
new file mode 100644
index 00000000000..8387528bb0f
--- /dev/null
+++ b/modules/tpmnBidAdapter.md
@@ -0,0 +1,37 @@
+# Overview
+
+```
+Module Name:  TPMN Bid Adapter
+Module Type:  Bidder Adapter
+Maintainer: develop@tpmn.co.kr
+```
+
+# Description
+
+Connects to TPMN exchange for bids.
+
+NOTE:
+- TPMN bid adapter only supports Banner at the moment.
+- Multi-currency is not supported.
+
+# Sample Ad Unit Config
+```
+  var adUnits = [{
+      // Banner adUnit
+      code: 'banner-div',
+	  mediaTypes: {
+		  banner: {
+		    sizes: [[300, 250], [320, 50]],  // banner size
+		  }
+	  },
+    bids: [
+      {
+        bidder: 'tpmn',
+        params: {
+          inventoryId: '1',
+          publisherId: 'TPMN'
+        }
+      }
+    ]
+    }];
+```
\ No newline at end of file
diff --git a/test/spec/tpmnBidAdapter_spec.js b/test/spec/tpmnBidAdapter_spec.js
new file mode 100644
index 00000000000..8bff8bf465a
--- /dev/null
+++ b/test/spec/tpmnBidAdapter_spec.js
@@ -0,0 +1,144 @@
+/* eslint-disable no-tabs */
+import { expect } from 'chai';
+import { spec } from 'modules/tpmnBidAdapter';
+
+describe('tpmnAdapterTests', function() {
+  describe('isBidRequestValid', function() {
+    let bid = {
+      adUnitCode: 'temp-unitcode',
+      bidder: 'tpmn',
+      params: {
+        inventoryId: '1',
+        publisherId: 'TPMN'
+      },
+      bidId: '29092404798c9',
+      bidderRequestId: 'a01',
+      auctionId: 'da1d7a33-0260-4e83-a621-14674116f3f9',
+      mediaTypes: {
+        banner: {
+          sizes: [[300, 250]]
+        }
+      }
+    };
+    it('should return true if a bid is valid banner bid request', function() {
+      expect(spec.isBidRequestValid(bid)).to.be.equal(true);
+    });
+
+    it('should return false where requried param is missing', function() {
+      let bid = Object.assign({}, bid);
+      bid.params = {};
+      expect(spec.isBidRequestValid(bid)).to.be.equal(false);
+    });
+
+    it('should return false when required param values have invalid type', function() {
+      let bid = Object.assign({}, bid);
+      bid.params = {
+        'inventoryId': null,
+        'publisherId': null
+      };
+      expect(spec.isBidRequestValid(bid)).to.be.equal(false);
+    });
+  });
+
+  describe('buildRequests', function() {
+    it('should return an empty list  if there are no bid requests', function() {
+      const emptyBidRequests = [];
+      const bidderRequest = {};
+      const request = spec.buildRequests(emptyBidRequests, bidderRequest);
+      expect(request).to.be.an('array').that.is.empty;
+    });
+    it('should generate a POST server request with bidder API url, data', function() {
+      const bid = {
+        adUnitCode: 'temp-unitcode',
+        bidder: 'tpmn',
+        params: {
+          inventoryId: '1',
+          publisherId: 'TPMN'
+        },
+        bidId: '29092404798c9',
+        bidderRequestId: 'a01',
+        auctionId: 'da1d7a33-0260-4e83-a621-14674116f3f9',
+        mediaTypes: {
+          banner: {
+            sizes: [[300, 250]]
+          }
+        }
+      };
+      const tempBidRequests = [bid];
+      const tempBidderRequest = {refererInfo: {
+        referer: 'test',
+        site: {
+          domain: 'localhost',
+          page: 'http://localhost/test'
+        }
+      }};
+      const builtRequest = spec.buildRequests(tempBidRequests, tempBidderRequest);
+
+      expect(builtRequest).to.have.lengthOf(1);
+      expect(builtRequest[0].method).to.equal('POST');
+      expect(builtRequest[0].url).to.match(/ad.tpmn.co.kr\/prebidhb.tpmn/);
+      const apiRequest = builtRequest[0].data;
+      expect(apiRequest.site).to.deep.equal({
+        domain: 'localhost',
+        page: 'http://localhost/test'
+      });
+      expect(apiRequest.bids).to.have.lengthOf('1');
+      expect(apiRequest.bids[0].inventoryId).to.equal('1');
+      expect(apiRequest.bids[0].publisherId).to.equal('TPMN');
+      expect(apiRequest.bids[0].bidId).to.equal('29092404798c9');
+      expect(apiRequest.bids[0].adUnitCode).to.equal('temp-unitcode');
+      expect(apiRequest.bids[0].auctionId).to.equal('da1d7a33-0260-4e83-a621-14674116f3f9');
+      expect(apiRequest.bids[0].sizes).to.have.lengthOf('1');
+      expect(apiRequest.bids[0].sizes[0]).to.deep.equal({
+        width: 300,
+        height: 250
+      });
+    });
+  });
+
+  describe('interpretResponse', function() {
+    const bid = {
+      adUnitCode: 'temp-unitcode',
+      bidder: 'tpmn',
+      params: {
+        inventoryId: '1',
+        publisherId: 'TPMN'
+      },
+      bidId: '29092404798c9',
+      bidderRequestId: 'a01',
+      auctionId: 'da1d7a33-0260-4e83-a621-14674116f3f9',
+      mediaTypes: {
+        banner: {
+          sizes: [[300, 250]]
+        }
+      }
+    };
+    const tempBidRequests = [bid];
+
+    it('should return an empty aray to indicate no valid bids', function() {
+      const emptyServerResponse = {};
+      const bidResponses = spec.interpretResponse(emptyServerResponse, tempBidRequests);
+      expect(bidResponses).is.an('array').that.is.empty;
+    });
+    it('should return an empty array to indicate no valid bids', function() {
+      const mockBidResult = {
+        requestId: '9cf19229-34f6-4d06-bc1d-0e44e8d616c8',
+        cpm: 10.0,
+        creativeId: '1',
+        width: 300,
+        height: 250,
+        netRevenue: true,
+        currency: 'USD',
+        ttl: 1800,
+        ad: '<div style=\"width:300px;height:250px;margin: auto;background-color:#eee;border:solid 1px #b8b8b8;display:table;\"><span style=\"text-align:center;vertical-align:middle;display:table-cell;\"><a href=\"http://tpmn.co.kr\" target=\"_blank\">TPMN HeaderBidding!</a></span></div>',
+        adType: 'banner'
+      };
+      const testServerResponse = {
+        headers: [],
+        body: [mockBidResult]
+      };
+      const bidResponses = spec.interpretResponse(testServerResponse, tempBidRequests);
+      expect(bidResponses).deep.equal([mockBidResult]);
+    });
+  });
+});