James Alexander Slipper (born 6 June 1989) is an Australian professional rugby union player who plays as a prop for Super Rugby club ACT Brumbies and captains the Australia national team.^[1][2][3][4]

Slipper was born and raised on the Gold Coast, Queensland.^[5] He first played junior rugby for the Bond Pirates in the local Gold Coast competition, before dedicating his weekends to playing for The Southport School (TSS) in the prestigious GPS schools competition.^[6] He would take part in a golden generation for TSS which included back-to-back GPS premierships in 2006 and 2007^[7] while also being chosen to represent the Australian Schoolboys team three times in international fixtures. Following graduation, he signed a contract with the Queensland Reds.

In February 2010, Slipper made his Super Rugby debut against the New South Wales Waratahs at Suncorp Stadium in Brisbane.^{[citation needed]}

In the 2011 Super Rugby season, Slipper was a part of the championship winning Queensland Reds side.

On 16 January 2015, Slipper was appointed the new captain of the Queensland Reds, replacing James Horwill, who would be leaving the Reds at the end of the Super Rugby season to join English Premiership side Harlequin F.C.^{[8][9][10][11]}

In 2019, the ACT Super Rugby team, the Brumbies, added James Slipper to their team. He was a very positive addition to a successful season, with the Brumbies finishing on the top of the Australian conference. Slipper was said to add wisdom and depth to the team.^{[citation needed]}

Slipper was named in the squad for the Australia A national rugby union team's two matches against England in June 2010.^{[citation needed]}

On 12 June 2010, Slipper made his debut for the Australia national rugby union team against England at Perth. He is the 843rd player in history to represent Australia. He quickly became a regular for the national team, playing in all six of Australia's matches in the 2010 Tri Nations Series. Slipper featured in 13 of the Wallabies 14 Tests during 2010.^{[citation needed]}

Slipper was chosen in Australia's 30-man squad for the 2011 Rugby World Cup. He played in all of Australia's games during the tournament.^{[citation needed]}

On 5 September 2015, he captained the Wallabies to a 47–10 victory over the United States at Soldier Field in Chicago, as part of their preparations for the 2015 Rugby World Cup.

In 2018, Slipper received a two-month ban after testing positive for cocaine.^[12]

Slipper won his 100th cap for the Wallabies in a 24–22 victory over the All Blacks at Suncorp Stadium in Brisbane.^{[citation needed]}