diff --git a/lib/memoist.rb b/lib/memoist.rb
index c49e102..a9d7483 100644
--- a/lib/memoist.rb
+++ b/lib/memoist.rb
@@ -3,6 +3,34 @@
 require 'memoist/version'
 
 module Memoist
+  OPERATOR_METHOD_NAMES = {
+    '[]'  =>  '__ELEMENT_ACCESS_OP__',
+    '[]=' =>  '__ELEMENT_ASSIGNMENT_OP__',
+    '**'  =>  '__EXPOENTIATION_OP__',
+    '!'   =>  '__NEGATION_BANG_OP__',
+    '~'   =>  '__COMPLEMENT_OP__',
+    '+@'  =>  '__UNARY_PLUS_OP__',
+    '-@'  =>  '__UNARY_MINUS_OP__',
+    '*'   =>  '__MULTIPLICATION_OP__',
+    '/'   =>  '__DIVISION_OP__',
+    '%'   =>  '__MODULO_OP__',
+    '+'   =>  '__PLUS_OP__',
+    '-'   =>  '__MINUS_OP__',
+    '>>'  =>  '__BITWISE_SHIFT_RIGHT_OP__',
+    '<<'  =>  '__BITWISE_SHIFT_LEFT_OP__',
+    '&'   =>  '__BITWISE_AND_OP__',
+    '^'   =>  '__BITWISE_EXCLUSIVE_OR_OP__',
+    '|'   =>  '__BITWISE_OR_OP__',
+    '<='  =>  '__LTE_OP__',
+    '<'   =>  '__LT_OP__',
+    '>'   =>  '__GT_OP__',
+    '>='  =>  '__GTE_OP__',
+    '<=>' =>  '__SPACESHIP_OP__',
+    '=='  =>  '__EQUALITY_OP__',
+    '===' =>  '__TRIPLE_EQUALITY_OP__',
+    '=~'  =>  '__MATCH_OP__',
+  }.freeze
+
   def self.extended(extender)
     Memoist.memoist_eval(extender) do
       unless singleton_class.method_defined?(:memoized_methods)
@@ -13,12 +41,16 @@ def self.memoized_methods
     end
   end
 
+  def self.method_name_for(method_name)
+    OPERATOR_METHOD_NAMES.fetch(method_name.to_s, method_name)
+  end
+
   def self.memoized_ivar_for(method_name, identifier = nil)
-    "@#{memoized_prefix(identifier)}_#{escape_punctuation(method_name)}"
+    "@#{memoized_prefix(identifier)}_#{escape_punctuation(method_name_for(method_name))}"
   end
 
   def self.unmemoized_method_for(method_name, identifier = nil)
-    "#{unmemoized_prefix(identifier)}_#{method_name}".to_sym
+    "#{unmemoized_prefix(identifier)}_#{method_name_for(method_name)}".to_sym
   end
 
   def self.memoized_prefix(identifier = nil)
diff --git a/test/memoist_test.rb b/test/memoist_test.rb
index 433f119..24c107b 100644
--- a/test/memoist_test.rb
+++ b/test/memoist_test.rb
@@ -136,6 +136,40 @@ def name
     end
   end
 
+  class OperatorMethods
+    extend Memoist
+
+    OPERATORS = %w{
+      [] []=
+      **
+      ! ~ +@ -@
+      * / %
+      + -
+      >> <<
+      &
+      ^ |
+      <= < > >=
+      <=>
+      == === =~
+    }.freeze
+
+    attr_reader :counter
+
+    def initialize
+      @counter = CallCounter.new
+    end
+
+    OPERATORS.each do |operator|
+      class_eval(<<-EOS, __FILE__, __LINE__ + 1)
+        def #{operator}(other)
+          @counter.call(#{operator.inspect})
+          'foo'
+        end
+        memoize :#{operator}
+      EOS
+    end
+  end
+
   module Rates
     extend Memoist
 
@@ -560,4 +594,16 @@ def test_private_method_memoization
     assert_equal 'Yes', person.send(:is_developer?)
     assert_equal 1, person.is_developer_calls
   end
+
+  def test_operator_method_names
+    operator_methods = OperatorMethods.new
+
+    OperatorMethods::OPERATORS.each do |operator|
+      3.times { operator_methods.send(operator, 'bar') }
+
+      assert_equal 1, operator_methods.counter.count(operator)
+      assert_equal 'foo', operator_methods.send(operator, 'bar', :reload)
+      assert_equal 2, operator_methods.counter.count(operator)
+    end
+  end
 end