The Bergen County Executive is county executive of Bergen County, New Jersey, United States who, as the chief officer of the county's executive branch, oversees the administration of county government. The office was inaugurated in 1986 at the same time the Board of Chosen Freeholders, which plays a legislative role, was reconfigured. The New Jersey Superior Court had subsumed and replaced county courts in 1983. The executive offices are located in the county seat, Hackensack.

Hackensack is the most populous municipality and the county seat of Bergen County, in the U.S. state of New Jersey. The area was officially named New Barbadoes Township until 1921, but has informally been known as Hackensack since at least the 18th century. As of the 2020 United States census, the city's population was 46,030, its highest decennial count ever and an increase of 3,020 (+7.0%) from the 2010 census count of 43,010, which in turn reflected an increase of 333 (+0.8%) from the 42,677 counted in the 2000 census.