The Richmond County District Attorney is the elected district attorney for Richmond County, coterminous with the Borough of Staten Island, in New York City.

The office is responsible for the prosecution of violations of New York state laws, as violations of federal law in Richmond County are prosecuted by the U.S. Attorney for the Eastern District of New York.

In a legislative act of February 12, 1796, New York State was divided into seven districts, each with its own Assistant Attorney General.

was appointed to a three-year term by the County Court, and under the provisions of the Constitution of 1846, the office became elective by popular ballot.

[5] The term was increased to four years for the Richmond County District Attorney in 1937.