Kill Them All and Come Back Alone (Italian: Ammazzali tutti e torna solo; Spanish: Mátalos y vuelve) is a 1968 Italian–Spanish Western film directed by Enzo G. Castellari. Chuck Connors headlines an ensemble cast that also includes Frank Wolff, Franco Citti, Leo Anchóriz, Giovanni Cianfriglia, Alberto Dell'Acqua and Hercules Cortez. No woman is seen in the entire movie.

The story centers around a gang of robbers, whose boss (Connors) is tasked by a Confederate captain (Wolff) with stealing gold from a Union fort, before wiping out all of his men to save on their share of the booty. The film has earned notice as one of the genre's most action-oriented examples. It is a spiritual successor to Vado... l'ammazzo e torno (lit. 'I Go... I Kill Him and I Come Back'), another heist-themed Western made the previous year by Castellari, writer Tito Carpi and producer Edmondo Amati.