| Yesterday's Guys Used No Arsenic | |
| Director: | José A. Martínez Suárez |
| Producer: | Héctor Báilez |
| Starring: | Mecha Ortiz |
| Cinematography: | Miguel Rodríguez |
| Runtime: | 110 minutes |
| Country: | Argentina |
| Language: | Spanish |
Yesterday's Guys Used No Arsenic (Spanish; Castilian: Los Muchachos de antes no usaban arsénico) is a 1976 Argentine black comedy crime film directed by José A. Martínez Suárez. The film was selected as the Argentine entry for the Best Foreign Language Film at the 49th Academy Awards, but was not accepted as a nominee.[1]