--- a/browser/locales/search/list.json
+++ b/browser/locales/search/list.json
@@ -93,16 +93,23 @@
     },
     "az": {
       "default": {
         "visibleDefaultEngines": [
           "google", "amazondotcom", "azerdict", "bing", "ddg", "wikipedia-az", "yandex-az"
         ]
       }
     },
+    "be": {
+      "default": {
+        "visibleDefaultEngines": [
+          "yandex-by", "google", "ddg", "wikipedia-be", "wikipedia-be-tarask"
+        ]
+      }
+    },
     "bg": {
       "default": {
         "visibleDefaultEngines": [
           "google", "diribg", "amazondotcom", "ddg", "portalbgdict", "wikipedia-bg"
         ]
       }
     },
     "bn-BD": {

new file mode 100644
--- /dev/null
+++ b/browser/locales/searchplugins/wikipedia-be-tarask.xml
@@ -0,0 +1,19 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<SearchPlugin xmlns="http://www.mozilla.org/2006/browser/search/">
+<ShortName>Вікіпэдыя (be-tarask)</ShortName>
+<Description>Вікіпэдыя, вольная энцыкляпэдыя</Description>
+<InputEncoding>UTF-8</InputEncoding>
+<Image width="16" height="16">resource://search-plugins/images/wikipedia.ico</Image>
+<Url type="application/x-suggestions+json" method="GET" template="https://be-tarask.wikipedia.org/w/api.php">
+  <Param name="action" value="opensearch"/>
+  <Param name="search" value="{searchTerms}"/>
+</Url>
+<Url type="text/html" method="GET" template="https://be-tarask.wikipedia.org/wiki/Спэцыяльныя:Пошук"
+     resultdomain="wikipedia.org" rel="searchform">
+  <Param name="search" value="{searchTerms}"/>
+  <Param name="sourceid" value="Mozilla-search"/>
+</Url>
+</SearchPlugin>

new file mode 100644
--- /dev/null
+++ b/browser/locales/searchplugins/wikipedia-be.xml
@@ -0,0 +1,19 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<SearchPlugin xmlns="http://www.mozilla.org/2006/browser/search/">
+<ShortName>Вікіпедыя (be)</ShortName>
+<Description>Вікіпедыя, свабодная энцыклапедыя</Description>
+<InputEncoding>UTF-8</InputEncoding>
+<Image width="16" height="16">resource://search-plugins/images/wikipedia.ico</Image>
+<Url type="application/x-suggestions+json" method="GET" template="https://be.wikipedia.org/w/api.php">
+  <Param name="action" value="opensearch"/>
+  <Param name="search" value="{searchTerms}"/>
+</Url>
+<Url type="text/html" method="GET" template="https://be.wikipedia.org/wiki/Адмысловае:Search"
+     resultdomain="wikipedia.org" rel="searchform">
+  <Param name="search" value="{searchTerms}"/>
+  <Param name="sourceid" value="Mozilla-search"/>
+</Url>
+</SearchPlugin>

new file mode 100644
--- /dev/null
+++ b/browser/locales/searchplugins/yandex-by.xml
@@ -0,0 +1,22 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<SearchPlugin xmlns="http://www.mozilla.org/2006/browser/search/">
+<ShortName>Яндекс</ShortName>
+<Description>Пошук з дапамогаю Яндекс</Description>
+<InputEncoding>UTF-8</InputEncoding>
+<Image width="16" height="16">data:image/x-icon;base64,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</Image>
+<Url type="application/x-suggestions+json" method="GET" template="https://suggest.yandex.net/suggest-ff.cgi">
+  <Param name="part" value="{searchTerms}"/>
+</Url>
+<Url type="text/html" method="GET" template="https://yandex.by/yandsearch" resultdomain="yandex.by">
+  <MozParam name="clid" condition="purpose" purpose="searchbar"   value="2186618"/>
+  <MozParam name="clid" condition="purpose" purpose="keyword"     value="2186621"/>
+  <MozParam name="clid" condition="purpose" purpose="contextmenu" value="2186623"/>
+  <MozParam name="clid" condition="purpose" purpose="homepage"    value="2186617"/>
+  <MozParam name="clid" condition="purpose" purpose="newtab"      value="2186620"/>
+  <Param    name="text" value="{searchTerms}"/>
+</Url>
+<SearchForm>https://www.yandex.by/</SearchForm>
+</SearchPlugin>