Théo Klein (25 June 1920 – 28 January 2020) was a French lawyer who presided over the Conseil Représentatif des Institutions juives de France from 1983 to 1989.
From 1945 to 1950, he served as President of the Union des étudiants juifs de France (UEJF), of which he was a co-founder.
From 1970 to 1973, Klein was vice-president of the Conseil représentatif des institutions juives de France (CRIF), and was president from 1983 to 1989.
In 2012, Klein broke his ties with CRIF in a letter to then-President Richard Prasquier, criticizing his response to the Muhammad al-Durrah incident.
In the 1980s, along with Jacques Chirac, Jack Lang, and Claude-Gérard Marcus, Klein was a key figure in the opening of the Musée d'Art et d'Histoire du Judaïsme.
[9] He was a large donor to the museum, donating works from the likes of Boris Schatz and Jules Grandjouan.