diff --git a/lib/oga.rb b/lib/oga.rb
index a82b723..af07b65 100644
--- a/lib/oga.rb
+++ b/lib/oga.rb
@@ -27,6 +27,7 @@ require 'oga/xml/html_void_elements'
 require 'oga/xml/entities'
 require 'oga/xml/querying'
 require 'oga/xml/traversal'
+require 'oga/xml/expanded_name'
 require 'oga/xml/node'
 require 'oga/xml/document'
 require 'oga/xml/character_node'
diff --git a/lib/oga/xml/attribute.rb b/lib/oga/xml/attribute.rb
index 5e5d7f5..99dc96d 100644
--- a/lib/oga/xml/attribute.rb
+++ b/lib/oga/xml/attribute.rb
@@ -4,6 +4,8 @@ module Oga
     # Class for storing information about a single XML attribute.
     #
     class Attribute
+      include ExpandedName
+
       # The name of the attribute.
       # @return [String]
       attr_accessor :name
diff --git a/lib/oga/xml/element.rb b/lib/oga/xml/element.rb
index da9cbcf..04abc13 100644
--- a/lib/oga/xml/element.rb
+++ b/lib/oga/xml/element.rb
@@ -6,6 +6,7 @@ module Oga
     #
     class Element < Node
       include Querying
+      include ExpandedName
 
       # @return [String]
       attr_reader :namespace_name
diff --git a/lib/oga/xml/expanded_name.rb b/lib/oga/xml/expanded_name.rb
new file mode 100644
index 0000000..63484d9
--- /dev/null
+++ b/lib/oga/xml/expanded_name.rb
@@ -0,0 +1,14 @@
+module Oga
+  module XML
+    module ExpandedName
+      ##
+      # Returns the expanded name of the current Element or Attribute.
+      #
+      # @return [String]
+      #
+      def expanded_name
+        namespace_name ? "#{namespace_name}:#{name}" : name
+      end
+    end # ExpandedName
+  end # XML
+end # Oga
diff --git a/spec/oga/xml/attribute_spec.rb b/spec/oga/xml/attribute_spec.rb
index fbd9185..0bb22cf 100644
--- a/spec/oga/xml/attribute_spec.rb
+++ b/spec/oga/xml/attribute_spec.rb
@@ -164,4 +164,22 @@ Attribute(name: "a" namespace: Namespace(name: "b" uri: nil) value: "c")
 EOF
     end
   end
+
+  describe '#expanded_name' do
+    describe 'with a namespace' do
+      it 'returns a String' do
+        element = described_class.new(:namespace_name => 'foo', :name => 'bar')
+
+        element.expanded_name.should == 'foo:bar'
+      end
+    end
+
+    describe 'without a namespace' do
+      it 'returns a String' do
+        element = described_class.new(:name => 'bar')
+
+        element.expanded_name.should == 'bar'
+      end
+    end
+  end
 end
diff --git a/spec/oga/xml/element_spec.rb b/spec/oga/xml/element_spec.rb
index db92080..286a1d4 100644
--- a/spec/oga/xml/element_spec.rb
+++ b/spec/oga/xml/element_spec.rb
@@ -608,4 +608,22 @@ describe Oga::XML::Element do
       parent.flush_namespaces_cache
     end
   end
+
+  describe '#expanded_name' do
+    describe 'with a namespace' do
+      it 'returns a String' do
+        element = described_class.new(:namespace_name => 'foo', :name => 'bar')
+
+        element.expanded_name.should == 'foo:bar'
+      end
+    end
+
+    describe 'without a namespace' do
+      it 'returns a String' do
+        element = described_class.new(:name => 'bar')
+
+        element.expanded_name.should == 'bar'
+      end
+    end
+  end
 end