The club was founded in 1956 as
Cornwall AFC, originally as a youth-oriented breakaway of
Ellerslie AFC; Cornwall began play in the 1957 season, holding home games first at
Auckland Domain until Fergusson Domain was made available in 1961. The club's change of name to
Onehunga Sports and Soccer Club came in 1986, soon followed by the club's first promotion to the NRFL Premier in 1991. As Onehunga gradually progressed, gaining promotion into higher divisions, tighter restrictions on the playing surface at Fergusson Domain were placed on the club. Relocation discussions began in 1995, and following the construction of clubrooms and training facilities the club moved to Waikakara Park for the 2004 season. In 2010, Onehunga Sports won the
NRFL Division 1 title, winning promotion to the regional top flight. In 2017 and 2018, Onehunga Sports won consecutive
NRFL Premier titles; 2017 also saw the team lift the
Chatham Cup for the first time, defeating
Central United in the
final. In 2020, Onehunga Sports merged with
Three Kings United to form
Auckland United, which assumed Onehunga's position in the 2020 NRFL Premier season; the youth, women's and social sectors of Onehunga Sports remain in operation. ==Notable former players==