John Longmire (born 31 December 1970) is the former senior coach of the Sydney Swans in the Australian Football League (AFL) from 2011 to 2024.

[2] He took up Australian rules as a child and first came into notice when he won the 1984 Thirds goal kicking award in the Coreen & District Football League with Rutherglen.

He did well in that role during the 1989 season, holding Tony Lockett to five kicks in Round 14, but North's lack of key position players in attack saw him moved back to the forward line in August.

Longmire won North Melbourne's best and fairest award that year and led the club's goal kicking list every season from 1990 to 1994.

[7][8] Longmire's first game as the Sydney Swans senior coach in the 2011 season ended in a draw against Melbourne, with both teams scoring 11.18 (84).

[10] Longmire had a relatively good start to his coaching career, with only five losses in the first fourteen rounds of the season (albeit against top-four opposition in Geelong, Carlton (twice), Hawthorn and Collingwood).

[11] One of his best coaching achievements was engineering Sydney's upset 13-point victory over Geelong at Skilled Stadium in the penultimate round of the 2011 season.

After beating St Kilda in the elimination finals at Etihad Stadium, the Swans were defeated by Hawthorn in the semi-finals ending what was otherwise a promising first season for Longmire in the top job.

[19] In 2020, Longmire coached the All-Stars team in a one-off 2020 State of Origin match which was played on 28 February 2020 at Docklands Stadium.

[21][22] On 2 March 2023, it was announced that Longmire had signed a two-year extension contract to remain the Sydney Swans senior coach until at least the end of 2025.