Ritwik

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