diff --git a/README.md b/README.md
index bd1aace9b..a7a37bca5 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,7 @@ Validator                               | Description
 **isFloat(str [, options])**            | check if the string is a float.<br/><br/>`options` is an object which can contain the keys `min`, `max`, `gt`, and/or `lt` to validate the float is within boundaries (e.g. `{ min: 7.22, max: 9.55 }`). `min` and `max` are equivalent to 'greater or equal' and 'less or equal', respectively while `gt` and `lt` are their strict counterparts.
 **isFullWidth(str)**                    | check if the string contains any full-width chars.
 **isHalfWidth(str)**                    | check if the string contains any half-width chars.
+**isHash(str, algorithm)**              | check if the string is a hash of type algorithm.<br/><br/>Algorithm is one of `['md4', 'md5', 'sha1', 'sha256', 'sha384', 'sha512', 'ripemd128', 'ripemd160', 'tiger128', 'tiger160', 'tiger192', 'crc32', 'crc32b']`
 **isHexColor(str)**                     | check if the string is a hexadecimal color.
 **isHexadecimal(str)**                  | check if the string is a hexadecimal number.
 **isIP(str [, version])**               | check if the string is an IP (version 4 or 6).
diff --git a/index.js b/index.js
index 82ae57199..7ffe6345d 100644
--- a/index.js
+++ b/index.js
@@ -132,6 +132,10 @@ var _isMD = require('./lib/isMD5');
 
 var _isMD2 = _interopRequireDefault(_isMD);
 
+var _isHash = require('./lib/isHash');
+
+var _isHash2 = _interopRequireDefault(_isHash);
+
 var _isJSON = require('./lib/isJSON');
 
 var _isJSON2 = _interopRequireDefault(_isJSON);
@@ -294,6 +298,7 @@ var validator = {
   isHexColor: _isHexColor2.default,
   isISRC: _isISRC2.default,
   isMD5: _isMD2.default,
+  isHash: _isHash2.default,
   isJSON: _isJSON2.default,
   isEmpty: _isEmpty2.default,
   isLength: _isLength2.default,
diff --git a/lib/isHash.js b/lib/isHash.js
new file mode 100644
index 000000000..32cc29b9f
--- /dev/null
+++ b/lib/isHash.js
@@ -0,0 +1,35 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = isHash;
+
+var _assertString = require('./util/assertString');
+
+var _assertString2 = _interopRequireDefault(_assertString);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var lengths = {
+  md5: 32,
+  md4: 32,
+  sha1: 40,
+  sha256: 64,
+  sha384: 96,
+  sha512: 128,
+  ripemd128: 32,
+  ripemd160: 40,
+  tiger128: 32,
+  tiger160: 40,
+  tiger192: 48,
+  crc32: 8,
+  crc32b: 8
+};
+
+function isHash(str, algorithm) {
+  (0, _assertString2.default)(str);
+  var hash = new RegExp('^[a-f0-9]{' + lengths[algorithm] + '}$');
+  return hash.test(str);
+}
+module.exports = exports['default'];
\ No newline at end of file
diff --git a/src/index.js b/src/index.js
index 0ee164231..6ab22df35 100644
--- a/src/index.js
+++ b/src/index.js
@@ -38,6 +38,7 @@ import isHexColor from './lib/isHexColor';
 import isISRC from './lib/isISRC';
 
 import isMD5 from './lib/isMD5';
+import isHash from './lib/isHash';
 
 import isJSON from './lib/isJSON';
 import isEmpty from './lib/isEmpty';
@@ -121,6 +122,7 @@ const validator = {
   isHexColor,
   isISRC,
   isMD5,
+  isHash,
   isJSON,
   isEmpty,
   isLength,
diff --git a/src/lib/isHash.js b/src/lib/isHash.js
new file mode 100644
index 000000000..62af2d413
--- /dev/null
+++ b/src/lib/isHash.js
@@ -0,0 +1,23 @@
+import assertString from './util/assertString';
+
+const lengths = {
+  md5: 32,
+  md4: 32,
+  sha1: 40,
+  sha256: 64,
+  sha384: 96,
+  sha512: 128,
+  ripemd128: 32,
+  ripemd160: 40,
+  tiger128: 32,
+  tiger160: 40,
+  tiger192: 48,
+  crc32: 8,
+  crc32b: 8,
+};
+
+export default function isHash(str, algorithm) {
+  assertString(str);
+  const hash = new RegExp(`^[a-f0-9]{${lengths[algorithm]}}$`);
+  return hash.test(str);
+}
diff --git a/test/validators.js b/test/validators.js
index 7b4d07ed8..64ae315f0 100644
--- a/test/validators.js
+++ b/test/validators.js
@@ -1703,6 +1703,127 @@ describe('Validators', function () {
     });
   });
 
+  it('should validate hash strings', function () {
+    test({
+      validator: 'isHash',
+      args: ['md5', 'md4', 'ripemd128', 'tiger128'],
+      valid: [
+        'd94f3f016ae679c3008de268209132f2',
+        '751adbc511ccbe8edf23d486fa4581cd',
+        '88dae00e614d8f24cfd5a8b3f8002e93',
+        '0bf1c35032a71a14c2f719e5a14c1e96',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'q94375dj93458w34',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+    test({
+      validator: 'isHash',
+      args: ['crc32', 'crc32b'],
+      valid: [
+        'd94f3f01',
+        '751adbc5',
+        '88dae00e',
+        '0bf1c350',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'q94375dj93458w34',
+        'q943',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+    test({
+      validator: 'isHash',
+      args: ['sha1', 'tiger160', 'ripemd160'],
+      valid: [
+        '3ca25ae354e192b26879f651a51d92aa8a34d8d3',
+        'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d',
+        'beb8c3f30da46be179b8df5f5ecb5e4b10508230',
+        'efd5d3b190e893ed317f38da2420d63b7ae0d5ed',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+        'q94375dj93458w34',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+    test({
+      validator: 'isHash',
+      args: ['sha256'],
+      valid: [
+        '2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824',
+        '1d996e033d612d9af2b44b70061ee0e868bfd14c2dd90b129e1edeb7953e7985',
+        '80f70bfeaed5886e33536bcfa8c05c60afef5a0e48f699a7912d5e399cdcc441',
+        '579282cfb65ca1f109b78536effaf621b853c9f7079664a3fbe2b519f435898c',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+        'q94375dj93458w34',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+    test({
+      validator: 'isHash',
+      args: ['sha384'],
+      valid: [
+        '3fed1f814d28dc5d63e313f8a601ecc4836d1662a19365cbdcf6870f6b56388850b58043f7ebf2418abb8f39c3a42e31',
+        'b330f4e575db6e73500bd3b805db1a84b5a034e5d21f0041d91eec85af1dfcb13e40bb1c4d36a72487e048ac6af74b58',
+        'bf547c3fc5841a377eb1519c2890344dbab15c40ae4150b4b34443d2212e5b04aa9d58865bf03d8ae27840fef430b891',
+        'fc09a3d11368386530f985dacddd026ae1e44e0e297c805c3429d50744e6237eb4417c20ffca8807b071823af13a3f65',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+        'q94375dj93458w34',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+    test({
+      validator: 'isHash',
+      args: ['sha512'],
+      valid: [
+        '9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043',
+        '83c586381bf5ba94c8d9ba8b6b92beb0997d76c257708742a6c26d1b7cbb9269af92d527419d5b8475f2bb6686d2f92a6649b7f174c1d8306eb335e585ab5049',
+        '45bc5fa8cb45ee408c04b6269e9f1e1c17090c5ce26ffeeda2af097735b29953ce547e40ff3ad0d120e5361cc5f9cee35ea91ecd4077f3f589b4d439168f91b9',
+        '432ac3d29e4f18c7f604f7c3c96369a6c5c61fc09bf77880548239baffd61636d42ed374f41c261e424d20d98e320e812a6d52865be059745fdb2cb20acff0ab',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+        'q94375dj93458w34',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+    test({
+      validator: 'isHash',
+      args: ['tiger192'],
+      valid: [
+        '6281a1f098c5e7290927ed09150d43ff3990a0fe1a48267c',
+        '56268f7bc269cf1bc83d3ce42e07a85632394737918f4760',
+        '46fc0125a148788a3ac1d649566fc04eb84a746f1a6e4fa7',
+        '7731ea1621ae99ea3197b94583d034fdbaa4dce31a67404a',
+      ],
+      invalid: [
+        'KYT0bf1c35032a71a14c2f719e5a14c1',
+        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+        'q94375dj93458w34',
+        '39485729348',
+        '%&FHKJFvk',
+      ],
+    });
+  });
+
   it('should validate null strings', function () {
     test({
       validator: 'isEmpty',
diff --git a/validator.js b/validator.js
index a36a0d746..ca32ea512 100644
--- a/validator.js
+++ b/validator.js
@@ -653,6 +653,28 @@ function isMD5(str) {
   return md5.test(str);
 }
 
+var lengths = {
+  md5: 32,
+  md4: 32,
+  sha1: 40,
+  sha256: 64,
+  sha384: 96,
+  sha512: 128,
+  ripemd128: 32,
+  ripemd160: 40,
+  tiger128: 32,
+  tiger160: 40,
+  tiger192: 48,
+  crc32: 8,
+  crc32b: 8
+};
+
+function isHash(str, algorithm) {
+  assertString(str);
+  var hash = new RegExp('^[a-f0-9]{' + lengths[algorithm] + '}$');
+  return hash.test(str);
+}
+
 function isJSON(str) {
   assertString(str);
   try {
@@ -1365,6 +1387,7 @@ var validator = {
   isHexColor: isHexColor,
   isISRC: isISRC,
   isMD5: isMD5,
+  isHash: isHash,
   isJSON: isJSON,
   isEmpty: isEmpty,
   isLength: isLength,
diff --git a/validator.min.js b/validator.min.js
index 3bbc40a24..bec41df9c 100644
--- a/validator.min.js
+++ b/validator.min.js
@@ -20,4 +20,4 @@
  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.validator=t()}(this,function(){"use strict";function e(e){if(!("string"==typeof e||e instanceof String))throw new TypeError("This library (validator.js) validates strings only")}function t(t){return e(t),t=Date.parse(t),isNaN(t)?null:new Date(t)}function r(t){return e(t),parseFloat(t)}function o(e){return"object"===(void 0===e?"undefined":v(e))&&null!==e?e="function"==typeof e.toString?e.toString():"[object Object]":(null===e||void 0===e||isNaN(e)&&!e.length)&&(e=""),String(e)}function i(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},t=arguments[1];for(var r in t)void 0===e[r]&&(e[r]=t[r]);return e}function n(t,r){e(t);var o=void 0,i=void 0;"object"===(void 0===r?"undefined":v(r))?(o=r.min||0,i=r.max):(o=arguments[1],i=arguments[2]);var n=encodeURI(t).split(/%..|./).length-1;return n>=o&&(void 0===i||n<=i)}function a(t,r){e(t),(r=i(r,$)).allow_trailing_dot&&"."===t[t.length-1]&&(t=t.substring(0,t.length-1));var o=t.split(".");if(r.require_tld){var n=o.pop();if(!o.length||!/^([a-z\u00a1-\uffff]{2,}|xn[a-z0-9-]{2,})$/i.test(n))return!1;if(/[\s\u2002-\u200B\u202F\u205F\u3000\uFEFF\uDB40\uDC20]/.test(n))return!1}for(var a,l=0;l<o.length;l++){if(a=o[l],r.allow_underscores&&(a=a.replace(/_/g,"")),!/^[a-z\u00a1-\uffff0-9-]+$/i.test(a))return!1;if(/[\uff01-\uff5e]/.test(a))return!1;if("-"===a[0]||"-"===a[a.length-1])return!1}return!0}function l(t,r){if(e(t),(r=i(r,F)).require_display_name||r.allow_display_name){var o=t.match(A);if(o)t=o[1];else if(r.require_display_name)return!1}var l=t.split("@"),s=l.pop(),u=l.join("@"),d=s.toLowerCase();if("gmail.com"!==d&&"googlemail.com"!==d||(u=u.replace(/\./g,"").toLowerCase()),!n(u,{max:64})||!n(s,{max:254}))return!1;if(!a(s,{require_tld:r.require_tld}))return!1;if('"'===u[0])return u=u.slice(1,u.length-1),r.allow_utf8_local_part?b.test(u):w.test(u);for(var c=r.allow_utf8_local_part?y:x,f=u.split("."),g=0;g<f.length;g++)if(!c.test(f[g]))return!1;return!0}function s(t){var r=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"";if(e(t),!(r=String(r)))return s(t,4)||s(t,6);if("4"===r)return!!E.test(t)&&t.split(".").sort(function(e,t){return e-t})[3]<=255;if("6"===r){var o=t.split(":"),i=!1,n=s(o[o.length-1],4),a=n?7:8;if(o.length>a)return!1;if("::"===t)return!0;"::"===t.substr(0,2)?(o.shift(),o.shift(),i=!0):"::"===t.substr(t.length-2)&&(o.pop(),o.pop(),i=!0);for(var l=0;l<o.length;++l)if(""===o[l]&&l>0&&l<o.length-1){if(i)return!1;i=!0}else if(n&&l===o.length-1);else if(!S.test(o[l]))return!1;return i?o.length>=1:o.length===a}return!1}function u(e){return"[object RegExp]"===Object.prototype.toString.call(e)}function d(e,t){for(var r=0;r<t.length;r++){var o=t[r];if(e===o||u(o)&&o.test(e))return!0}return!1}function c(t){return e(t),J.test(t)}function f(t){var r=arguments.length>1&&void 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