Stanleycaris is an extinct, monotypic genus of anomalocaridid which existed in Canada, during the middle Cambrian (Cambrian Series 3). It was first named by Jean-Bernard Caron, Robert R. Gaines, M. Gabriela Mángano, Michael Streng and Allison C. Daley in 2010 and the type species is Stanleycaris hirpex. Stanleycaris described from the Stephen Formation near the Stanley Glacier Burgess Shale locality and also informally reported from Mount Odaray.