The 142nd New York State Legislature, consisting of the New York State Senate and the New York State Assembly, met from January 1 to June 16, 1919, during the first year of Al Smith's governorship, in Albany.

August "Gus" Claessens was a Swiss-born American socialist politician, best known as one of the five New York Assemblymen expelled from that body during the First Red Scare for their membership in the Socialist Party of America.