Piet Leidreiter (born 2 February 1965) is a German politician. He was federal treasurer of Alternative for Germany until 2015. He was a founding member of the Liberal Conservative Reformers (ALFA) party and was a member of the Bremen Parliament from 2015 to 2019.[1] Since 12 June 2017, he has been a member of the voters' association Citizens in Rage (BIW).