diff --git a/.gitignore b/.gitignore
index 6c2a9404..a8b34bd1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -57,3 +57,6 @@ experiment.py
 
 # Doc's
 docs/html
+
+# i18n/l10n
+*.mo
diff --git a/aiogram/contrib/middlewares/i18n.py b/aiogram/contrib/middlewares/i18n.py
new file mode 100644
index 00000000..3b60e070
--- /dev/null
+++ b/aiogram/contrib/middlewares/i18n.py
@@ -0,0 +1,137 @@
+import gettext
+import os
+from contextvars import ContextVar
+from typing import Any, Dict, Tuple
+
+from babel import Locale
+
+from ... import types
+from ...dispatcher.middlewares import BaseMiddleware
+
+
+class I18nMiddleware(BaseMiddleware):
+    """
+    I18n middleware based on gettext util
+
+    >>> dp = Dispatcher(bot)
+    >>> i18n = I18nMiddleware(DOMAIN, LOCALES_DIR)
+    >>> dp.middleware.setup(i18n)
+    and then
+    >>> _ = i18n.gettext
+    or
+    >>> _ = i18n = I18nMiddleware(DOMAIN_NAME, LOCALES_DIR)
+    """
+
+    ctx_locale = ContextVar('ctx_user_locale', default=None)
+
+    def __init__(self, domain, path=None, default='en'):
+        """
+        :param domain: domain
+        :param path: path where located all *.mo files
+        :param default: default locale name
+        """
+        super(I18nMiddleware, self).__init__()
+
+        if path is None:
+            path = os.path.join(os.getcwd(), 'locales')
+
+        self.domain = domain
+        self.path = path
+        self.default = default
+
+        self.locales = self.find_locales()
+
+    def find_locales(self) -> Dict[str, gettext.GNUTranslations]:
+        """
+        Load all compiled locales from path
+
+        :return: dict with locales
+        """
+        translations = {}
+
+        for name in os.listdir(self.path):
+            if not os.path.isdir(self.path):
+                continue
+            mo_path = os.path.join(self.path, name, 'LC_MESSAGES', self.domain + '.mo')
+
+            if os.path.exists(mo_path):
+                with open(mo_path, 'rb') as fp:
+                    translations[name] = gettext.GNUTranslations(fp)
+
+        return translations
+
+    def reload(self):
+        """
+        Hot reload locles
+        """
+        self.locales = self.find_locales()
+
+    @property
+    def available_locales(self) -> Tuple[str]:
+        """
+        list of loaded locales
+
+        :return:
+        """
+        return tuple(self.locales.keys())
+
+    def __call__(self, singular, plural=None, n=1, locale=None) -> str:
+        return self.gettext(singular, plural, n, locale)
+
+    def gettext(self, singular, plural=None, n=1, locale=None) -> str:
+        """
+        Get text
+
+        :param singular:
+        :param plural:
+        :param n:
+        :param locale:
+        :return:
+        """
+        if locale is None:
+            locale = self.ctx_locale.get()
+
+        if locale not in self.locales:
+            if n is 1:
+                return singular
+            else:
+                return plural
+
+        translator = self.locales[locale]
+
+        if plural is None:
+            return translator.gettext(singular)
+        else:
+            return translator.ngettext(singular, plural, n)
+
+    async def get_user_locale(self, action: str, args: Tuple[Any]) -> str:
+        """
+        User locale getter
+        You can override the method if you want to use different way of getting user language.
+
+        :param action: event name
+        :param args: event arguments
+        :return: locale name
+        """
+        user: types.User = types.User.current()
+        locale: Locale = user.locale
+
+        if locale:
+            *_, data = args
+            language = data['locale'] = locale.language
+            return language
+
+    async def trigger(self, action, args):
+        """
+        Event trigger
+
+        :param action: event name
+        :param args: event arguments
+        :return:
+        """
+        if 'update' not in action \
+                and 'error' not in action \
+                and action.startswith('pre_process'):
+            locale = await self.get_user_locale(action, args)
+            self.ctx_locale.set(locale)
+            return True
diff --git a/examples/i18n_example.py b/examples/i18n_example.py
new file mode 100644
index 00000000..a7ccbde3
--- /dev/null
+++ b/examples/i18n_example.py
@@ -0,0 +1,57 @@
+"""
+Internalize your bot
+
+Step 1: extract texts
+    # pybabel extract i18n_example.py -o locales/mybot.pot
+Step 2: create *.po files. For e.g. create en, ru, uk locales.
+    # echo {en,ru,uk} | xargs -n1 pybabel init -i locales/mybot.pot -d locales -D mybot -l
+Step 3: translate texts
+Step 4: compile translations
+    # pybabel compile -d locales -D mybot
+
+Step 5: When you change the code of your bot you need to update po & mo files.
+    Step 5.1: regenerate pot file:
+        command from step 1
+    Step 5.2: update po files
+        # pybabel update -d locales -D mybot -i locales/mybot.pot
+    Step 5.3: update your translations
+    Step 5.4: compile mo files
+        command from step 4
+"""
+
+from pathlib import Path
+
+from aiogram import Bot, Dispatcher, types
+from aiogram.contrib.middlewares.i18n import I18nMiddleware
+from aiogram.utils import executor
+
+TOKEN = 'BOT TOKEN HERE'
+I18N_DOMAIN = 'mybot'
+
+BASE_DIR = Path(__file__).parent
+LOCALES_DIR = BASE_DIR / 'locales'
+
+bot = Bot(TOKEN, parse_mode=types.ParseMode.HTML)
+dp = Dispatcher(bot)
+
+# Setup i18n middleware
+i18n = I18nMiddleware(I18N_DOMAIN, LOCALES_DIR)
+dp.middleware.setup(i18n)
+
+# Alias for gettext method
+_ = i18n.gettext
+
+
+@dp.message_handler(commands=['start'])
+async def cmd_start(message: types.Message):
+    # Simply use `_('message')` instead of `'message'` and never use f-strings for translatable texts.
+    await message.reply(_('Hello, <b>{user}</b>!').format(user=message.from_user.full_name))
+
+
+@dp.message_handler(commands=['lang'])
+async def cmd_lang(message: types.Message, locale):
+    await message.reply(_('Your current language: <i>{language}</i>').format(language=locale))
+
+
+if __name__ == '__main__':
+    executor.start_polling(dp, skip_updates=True)
diff --git a/examples/locales/en/LC_MESSAGES/mybot.po b/examples/locales/en/LC_MESSAGES/mybot.po
new file mode 100644
index 00000000..75970929
--- /dev/null
+++ b/examples/locales/en/LC_MESSAGES/mybot.po
@@ -0,0 +1,28 @@
+# English translations for PROJECT.
+# Copyright (C) 2018 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2018-06-30 03:50+0300\n"
+"PO-Revision-Date: 2018-06-30 03:43+0300\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: en\n"
+"Language-Team: en <LL@li.org>\n"
+"Plural-Forms: nplurals=2; plural=(n != 1)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.6.0\n"
+
+#: i18n_example.py:48
+msgid "Hello, <b>{user}</b>!"
+msgstr ""
+
+#: i18n_example.py:53
+msgid "Your current language: <i>{language}</i>"
+msgstr ""
+
diff --git a/examples/locales/mybot.pot b/examples/locales/mybot.pot
new file mode 100644
index 00000000..988ed463
--- /dev/null
+++ b/examples/locales/mybot.pot
@@ -0,0 +1,27 @@
+# Translations template for PROJECT.
+# Copyright (C) 2018 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2018.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2018-06-30 03:50+0300\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.6.0\n"
+
+#: i18n_example.py:48
+msgid "Hello, <b>{user}</b>!"
+msgstr ""
+
+#: i18n_example.py:53
+msgid "Your current language: <i>{language}</i>"
+msgstr ""
+
diff --git a/examples/locales/ru/LC_MESSAGES/mybot.po b/examples/locales/ru/LC_MESSAGES/mybot.po
new file mode 100644
index 00000000..73876f30
--- /dev/null
+++ b/examples/locales/ru/LC_MESSAGES/mybot.po
@@ -0,0 +1,29 @@
+# Russian translations for PROJECT.
+# Copyright (C) 2018 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2018-06-30 03:50+0300\n"
+"PO-Revision-Date: 2018-06-30 03:43+0300\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: ru\n"
+"Language-Team: ru <LL@li.org>\n"
+"Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && "
+"n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.6.0\n"
+
+#: i18n_example.py:48
+msgid "Hello, <b>{user}</b>!"
+msgstr "Привет, <b>{user}</b>!"
+
+#: i18n_example.py:53
+msgid "Your current language: <i>{language}</i>"
+msgstr "Твой язык: <i>{language}</i>"
+
diff --git a/examples/locales/uk/LC_MESSAGES/mybot.po b/examples/locales/uk/LC_MESSAGES/mybot.po
new file mode 100644
index 00000000..25970c19
--- /dev/null
+++ b/examples/locales/uk/LC_MESSAGES/mybot.po
@@ -0,0 +1,29 @@
+# Ukrainian translations for PROJECT.
+# Copyright (C) 2018 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2018.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2018-06-30 03:50+0300\n"
+"PO-Revision-Date: 2018-06-30 03:43+0300\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: uk\n"
+"Language-Team: uk <LL@li.org>\n"
+"Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && "
+"n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.6.0\n"
+
+#: i18n_example.py:48
+msgid "Hello, <b>{user}</b>!"
+msgstr "Привіт, <b>{user}</b>!"
+
+#: i18n_example.py:53
+msgid "Your current language: <i>{language}</i>"
+msgstr "Твоя мова: <i>{language}</i>"
+