Hugo Kaas (2 May 1892 – 31 July 1941 Tartu) was an Estonian politician. He was a member of II Riigikogu. He was a member of the Riigikogu since 9 April 1924, representing the Workers' United Front. He replaced Peeter Michelson. On 17 May 1924, he was removed from his position and he was replaced by Kristjan Saavo.^[1] He was arrested by German occupation authorities and shot in Tartu on 31 July 1941.