Southend United Football Club is a professional association football club based in Southend-on-Sea, Essex, England, which competes in the National League, the fifth level of English football. The team are known as "The Shrimpers", a reference to the area's maritime industry that is included as one of the quarters on the club badge.

Southend-on-Sea, commonly referred to as Southend, is a coastal city and unitary authority area with borough status in southeastern Essex, England. It lies on the north side of the Thames Estuary, 40 miles (64 km) east of central London. It is bordered to the north by Rochford and to the west by Castle Point. It is home to the longest pleasure pier in the world, Southend Pier. London Southend Airport is located north of the city centre.