Ritwik, Ritwick, Rithvik or Ritvik may refer to Ritwik (given name), an Indian male given name Ritwik (theatre group), a theatre group in West Bengal, India Kattappanayile Rithwik Roshan, a 2016 Indian Malayalam-language film Ritvik Holdings, a Canadian children's toy company Kirkbi AG v Ritvik Holdings Inc, a 2005 decision of the Supreme Court of Canada