Charles Andrew Orr (November 15, 1906 – August 15, 1999) was an American economist and socialist.
[1] He and his wife, Lois Orr, lived in Barcelona during the Spanish Civil War, where they supported the Workers' Party of Marxist Unification (POUM).
[2][3] They survived the Stalinist attack on the POUM in June 1937, after the fighting of the Barcelona May Days.
They were arrested on 17 June, the day after Andrés Nin and the POUM executive were arrested, but were released on 1 July and placed by the US consul, Mahlon Perkins, on a ship bound for Marseilles on 3 July.
Some elements of Orr's writings are also held within the Labadie Collection at the University of Michigan.