Truco, a variant of Truc, is a trick-taking card game originally from Valencia and the Balearic Islands, popular in South America and Italy. It is usually played using a Spanish deck. Two people may play, or two teams of two or three players each.

Truc, pronounced in France and in Spain, is a 15th-century bluff and counter-bluff trick-taking card game which has been likened to poker for two. It is played in Occitania, Sarthe, Poitou (tru) and the Basque Country (truka), and is still very popular in the Valencia region. More elaborate versions are widely played in Argentina, Uruguay, Venezuela, Paraguay and Brazil under such names as Truco, Truque and Truquiflor. The French version Le Truc has become more widely known in the English-speaking world and among hobbyist gamers after Sid Sackson included it in his popular book A Gamut of Games (1969), it being a translation of E. Lanes' 1912 book, Nouveau Manuel Complet des Jeux de Cartes.