Canas or Cañas is a surname. Notable people with the surname include:
Alberto Cañas Escalante, Costa Rican politician
Antonio José Cañas, Salvadoran military officer, diplomat and politician
Carlos Cañas, Salvadoran painter
Guillermo Cañas, Argentinian professional tennis player
Jorge Cañas, Salvadoran footballer
José Cañas Ruiz-Herrera, Spanish footballer
José María Cañas, Costa Rican military officer and politician
José Marín Cañas, Costa Rican journalist and writer
Juan José Cañas, co-author of the National Hymn of El Salvador
Juan José Cañas Gutiérrez, former Spanish footballer
Ricardo Moreno Cañas, Costa Rican politician
Vicente Cañas, Spanish Christian missionary and Jesuit brother
