diff --git a/lib/countries.ex b/lib/countries.ex
index 67f3166..dabb85d 100644
--- a/lib/countries.ex
+++ b/lib/countries.ex
@@ -15,13 +15,25 @@ defmodule Countries do
   ## Examples
     iex> Countries.filter_by(:region, "Europe")
     [%Countries.Country{address_format: nil, alpha2: "VA" ...
+
+    iex> Countries.filter_by(:names, "Reino Unido")
+    [%Countries.Country{address_format: nil, alpha2: "GB" ...
   """
   def filter_by(attribute, value) do
     Enum.filter(countries(), fn(country) ->
-      Map.get(country, attribute) == value
+      Map.get(country, attribute)
+      |> equals_or_contains_in_list(value)
     end)
   end
 
+  defp equals_or_contains_in_list(attribute, value) when is_list(attribute) do
+    Enum.member?(attribute, value)
+  end
+
+  defp equals_or_contains_in_list(attribute, value) do
+    attribute == value
+  end
+
   @doc """
   Checks if country for specific attribute and value exists.
 
diff --git a/lib/data/countries/GB.yaml b/lib/data/countries/GB.yaml
index b940a04..ac1ccd7 100755
--- a/lib/data/countries/GB.yaml
+++ b/lib/data/countries/GB.yaml
@@ -19,6 +19,7 @@ longitude: 2 00 W
 name: United Kingdom
 names:
 - United Kingdom
+- The United Kingdom
 - Vereinigtes Königreich
 - Royaume-Uni
 - Reino Unido
diff --git a/test/countries_test.exs b/test/countries_test.exs
index ae64d6c..b553197 100644
--- a/test/countries_test.exs
+++ b/test/countries_test.exs
@@ -6,6 +6,19 @@ defmodule CountriesTest do
     assert Enum.count(country) == 1
   end
 
+  test "filter countries by name" do
+    countries = Countries.filter_by(:name, "United Kingdom")
+    assert Enum.count(countries) == 1
+  end
+
+  test "filter countries by alternative names" do
+    countries = Countries.filter_by(:names, "Reino Unido")
+    assert Enum.count(countries) == 1
+
+    countries = Countries.filter_by(:names, "The United Kingdom")
+    assert Enum.count(countries) == 1
+  end
+
   test "filter many countries by region" do
     countries = Countries.filter_by(:region, "Europe")
     assert Enum.count(countries) == 51