Cognomen Guimara (Guimara 
) , globally, is a rare surname. The surname Guimara is habitual in Latin America and the Caribbean, particularly Brazil, where it is a very rare surname, Nicaragua, and Argentina, where it is an extremely rare surname. In absolute terms, it is commonest in Brazil, the United States, and Argentina. Much less frequently, Guimara is the forename as well as the last name.