Marcus Licinius Crassus Frugi^[1] (fl. 1st century BC) was the adoptive son of consul Marcus Licinius Crassus and the adoptive great-grandson of triumvir Marcus Licinius Crassus. Frugi's adoptive father was the last known direct descendant of the triumvir who bore his name.

Frugi served as a consul under the Roman emperor Augustus in 14 BC, during the Roman Empire. An inscription from the Balearic islands indicates he was governor of Hispania Tarraconensis around 10 BC.^[2] Another document shows he was proconsular governor of Africa for the term 9/8 BC.^[3][4]

Frugi's father is unknown; however, he may have been Marcus Pupius Piso Frugi (who may have been praetor in 44 BC and could have been a legatus in 40 BC), and his paternal grandfather was Marcus Pupius Piso Frugi Calpurnianus, consul in 61 BC.

Frugi, by an unnamed wife, had a son called Marcus Licinius Crassus Frugi, who served as consul in 27 who married Scribonia, a descendant of the triumvir Pompey, and a daughter called Licinia who married the consul of 27, Lucius Calpurnius Piso.