Hiram Monserrate (born July 12, 1967) is a former member of the New York State Senate. He represented the 13th District which includes the Queens neighborhood of Jackson Heights (Jackson Heights, Queens), Corona (Corona, Queens), East Elmhurst (East Elmhurst, Queens), Elmhurst (Elmhurst, Queens) and Woodside (Woodside, Queens). He was expelled by the New York State Senate on February 9, 2010 in connection with his misdemeanor assault conviction.cite news title=Lawmakers Expel N.Y. State Senator Over Assault last=Peters first=Jeremy publisher=New York Times url= date=2009-02-09

Previously, he was member of the New York City Council representing District 21 covering an area similar to the 13th Senate District. He had served as Co-chair of the City Councils Black, Latino and Asian Caucus and as chairman of the Veterans Committee on the Council. He is a member of the Democratic Party (Democratic Party (United States)). He is a former Marine and New York City police officer.

On March 23, 2009, a grand jury indicted Monserrate on three felony and three misdemeanor charges, in connection with a December 19, 2008 injury to his girlfriend. He was convicted on October 15, 2009 of one count of misdemeanor assault, and acquitted of two counts of felony assault and one other count of misdemeanor assault. He was later sentenced to three years probation, 250 hours of community service, and one year of domestic abuse counseling. A committee of the State Senate made disciplinary recommendations to the entire Senate for his censure or expulsion. The State Senate voted to expel Monserrate.