diff --git a/README.md b/README.md
index c1576f892..7ad1f45ce 100644
--- a/README.md
+++ b/README.md
@@ -85,7 +85,7 @@ Passing anything other than a string is an error.
 - **isLength(str, options)** - check if the string's length falls in a range. `options` is an object which defaults to `{min:0, max: undefined}`. Note: this function takes into account surrogate pairs.
 - **isLowercase(str)** - check if the string is lowercase.
 - **isMACAddress(str)** - check if the string is a MAC address.
-- **isMobilePhone(str, locale)** - check if the string is a mobile phone number, (locale is one of `['ar-DZ', 'ar-SY', 'cs-CZ', 'de-DE', 'da-DK', 'el-GR', 'en-AU', 'en-GB', 'en-HK', 'en-IN', 'en-NZ', 'en-US', 'en-CA', 'en-ZA', 'en-ZM', 'es-ES', 'fi-FI', 'fr-FR', 'hu-HU', 'ms-MY', 'nb-NO', 'nn-NO', 'pt-PT', 'ru-RU', 'tr-TR', 'vi-VN', 'zh-CN', 'zh-TW']`).
+- **isMobilePhone(str, locale)** - check if the string is a mobile phone number, (locale is one of `['ar-DZ', 'ar-SY', 'cs-CZ', 'de-DE', 'da-DK', 'el-GR', 'en-AU', 'en-GB', 'en-HK', 'en-IN', 'en-NZ', 'en-US', 'en-CA', 'en-ZA', 'en-ZM', 'es-ES', 'fi-FI', 'fr-FR', 'hu-HU', 'ms-MY', 'nb-NO', 'nn-NO', 'pl-PL', 'pt-PT', 'ru-RU', 'tr-TR', 'vi-VN', 'zh-CN', 'zh-TW']`).
 - **isMongoId(str)** - check if the string is a valid hex-encoded representation of a [MongoDB ObjectId][mongoid].
 - **isMultibyte(str)** - check if the string contains one or more multibyte chars.
 - **isNull(str)** - check if the string is null (has a length of zero).
diff --git a/src/lib/isMobilePhone.js b/src/lib/isMobilePhone.js
index 2b578177f..38bba4e13 100644
--- a/src/lib/isMobilePhone.js
+++ b/src/lib/isMobilePhone.js
@@ -23,6 +23,7 @@ const phones = {
   'ms-MY': /^(\+?6?01){1}(([145]{1}(\-|\s)?\d{7,8})|([236789]{1}(\s|\-)?\d{7}))$/,
   'nb-NO': /^(\+?47)?[49]\d{7}$/,
   'nn-NO': /^(\+?47)?[49]\d{7}$/,
+  'pl-PL': /^(\+?48)? ?[5-8]\d ?\d{3} ?\d{2} ?\d{2}$/,
   'pt-BR': /^(\+?55|0)\-?[1-9]{2}\-?[2-9]{1}\d{3,4}\-?\d{4}$/,
   'pt-PT': /^(\+?351)?9[1236]\d{7}$/,
   'ru-RU': /^(\+?7|8)?9\d{9}$/,
diff --git a/test/validators.js b/test/validators.js
index 46f8a2f30..6af9e429f 100644
--- a/test/validators.js
+++ b/test/validators.js
@@ -2230,6 +2230,32 @@ describe('Validators', function () {
       args: ['es-ES'],
     });
 
+    test({
+      validator: 'isMobilePhone',
+      valid: [
+        '+48512689767',
+        '+48 56 376 87 47',
+        '56 566 78 46',
+        '657562855',
+        '+48657562855',
+        '+48 887472765',
+        '+48 56 6572724',
+        '+48 67 621 5461',
+        '48 67 621 5461',
+      ],
+      invalid: [
+        '+48  67 621 5461',
+        '+55657562855',
+        '3454535',
+        'teststring',
+        '',
+        '1800-88-8687',
+        '+6019-5830837',
+        '357562855',
+      ],
+      args: ['pl-PL'],
+    });
+
     test({
       validator: 'isMobilePhone',
       valid: [