Robert Menendez (born January 1, 1954) is an American lawyer and politician serving as the senior United States senator from New Jersey, a seat he has held since 2006. A member of the Democratic Party, he was first appointed to the U.S. Senate by Governor Jon Corzine, and chaired the United States Senate Committee on Foreign Relations from 2013 to 2015, and again since 2021.

In 1974, at the age of 20, Menendez was elected to the Union City School District's Board of Education. He received degrees from Saint Peter's University and Rutgers Law School. In 1986, he was elected mayor of Union City. In 1988, while continuing to serve as mayor, he was elected to represent the state's 33rd district in the New Jersey General Assembly and, within three years, moved to the New Jersey Senate, upon winning the March 1991 special election for the 33rd Senate district. The next year, Menendez won a seat in the House of Representatives and represented New Jersey's 13th congressional district for six two-year terms, from 1993 to 2006. In January 2006, he was appointed to fill the U.S. Senate seat being vacated by Jon Corzine (who had been elected governor of New Jersey), and was elected to a full six-year term in November; he was reelected in 2012 and 2018.

In 2015, Menendez was indicted on federal corruption charges; the jury was unable to reach a verdict, and the charges were dropped in 2018. In April 2018, the United States Senate Select Committee on Ethics "severely admonished" Menendez for accepting gifts from donor Salomon Melgen without obtaining committee approval, for failing to disclose certain gifts, and for using his position as a senator to advance Melgen's interests.