Halswell United is an amateur association football club based in Christchurch, New Zealand in the suburb of Halswell. They will compete in the New World Mainland Premier League.
The club was founded in 1964 as Halswell United Soccer, changing its name in 1999 when the national body officially changed its title to include the word football, and it is one of the largest clubs in the South Island, with over 900 members.
The club was formed in March and April 1964, with meetings at the Halswell Scouts Hall, which were on the site now occupied by the club's rooms. Initial teams were age-group teams (under-9 and under-13 boys). A senior team was soon added. By the second season, the club were granted the right to use Halswell Domain as its home ground. Drainage at the ground was poor, leading to several games being washed out. Building of clubrooms began in 1965; they were extended in 1968. In 1967 the club entered the Canterbury Football Association's competitions for the first time, competing in Division 3B (which they won in their inaugural season). This was followed by promotion to Division One in 1969.
New clubrooms were constructed starting in 1976, and work was completed on them in various stages over the following years, being finally finished in 1988.
Club colours were originally white, with a green hoop added in the club's second season. This strip now forms the basis of the club's away strip. Shorts became green from 1968, and shirts were changed to green and white stripes at the same time.