Fabio Valeriano Lanfranco De Masi (born 7 March 1980) is a German-Italian politician.

De Masi was born to a German language teacher and an Italian-born trade unionist.

[4][5] In addition to his committee assignments, he was part of the Parliament's delegation for relations with South Africa.

De Masi appeared at the newly formed party's press conference on January 8, 2024, and indicated that he was seeking political office with the BSW at 2024 European Parliament election.

[11] While other members abandoned the Left Party after Wagenknecht's call to end sanctions against Russia,[12] de Masi followed her and continues to call for "freezing" the war[13] and spreads narratives suggesting that Russia's aggression was a reaction to a NATO expansion [14] or that a peace treaty would have been possible in 2023.