2021 NBL1 West season

The 2021 NBL1 West season was the inaugural season of the NBL1 West following the rebrand of the State Basketball League (SBL) under the NBL1 banner. It marked the 32nd season in league history after the 2020 State Basketball League season was cancelled due to the COVID-19 pandemic.

The regular season began on Friday 16 April and ended on Saturday 14 August. The finals began on Friday 20 August and concluded with the women's grand final on Friday 3 September and the men's grand final on Saturday 4 September.

The 2021 NBL1 season was scheduled to include a National Finals in Melbourne featuring the West champions but the event was cancelled due to the uncertainty surrounding border control restrictions across Australia.

Regular season
In October 2020, Basketball Western Australia and the National Basketball League (NBL) announced a new partnership to bring NBL1 to Western Australia in 2021, with NBL1 replacing the SBL. The SBL was officially renamed NBL1 West and became the west conference of NBL1.

Seventeen rounds of competition was scheduled, with the regular season beginning on Friday 16 April. Round 2, Round 3 and Round 12 were not played (with games later rescheduled where possible) due to COVID-19 restrictions in Perth. Themed rounds included Pink Round (4), Mental Health Round (10) and Indigenous Round (13).

Standings
Men's ladder

Women's ladder

Finals
The finals began on Friday 20 August and consisted of four rounds. The finals concluded with the women's grand final on Friday 3 September and the men's grand final on Saturday 4 September.

Statistics leaders
Stats as of the end of the regular season

Regular season

 * Men's Most Valuable Player: Nic Pozoglou (Cockburn Cougars)
 * Women's Most Valuable Player: Alexandra Sharp (Willetton Tigers)
 * Men's Coach of the Year: Adam Nener (Willetton Tigers)
 * Women's Coach of the Year: Blake Srdarev (East Perth Eagles)
 * Men's Defensive Player of the Year: Nic Pozoglou (Cockburn Cougars)
 * Women's Defensive Player of the Year: Emma Gandini (Willetton Tigers)
 * Men's Youth Player of the Year: Rowan Mackenzie (Lakeside Lightning)
 * Women's Youth Player of the Year: Jewel Williams (Kalamunda Eastern Suns)
 * Men's Leading Scorer: Jay Bowie (Lakeside Lightning)
 * Women's Leading Scorer: Samantha Lubcke (Willetton Tigers)
 * Men's Leading Rebounder: Jarrad Prue (Lakeside Lightning)
 * Women's Leading Rebounder: Mary Goulding (East Perth Eagles)
 * Men's Golden Hands: Scott Machado (Mandurah Magic)
 * Women's Golden Hands: Casey Mihovilovich (Mandurah Magic)
 * All-NBL1 West Men's 1st Team:
 * Jay Bowie (Lakeside Lightning)
 * Scott Machado (Mandurah Magic)
 * Mathiang Muo (Geraldton Buccaneers)
 * Nic Pozoglou (Cockburn Cougars)
 * Louis Timms (Perth Redbacks)
 * All-NBL1 West Women's 1st Team:
 * Stacey Barr (Warwick Senators)
 * Mary Goulding (East Perth Eagles)
 * Samantha Lubcke (Willetton Tigers)
 * Alexandra Sharp (Willetton Tigers)
 * Kayla Steindl (Joondalup Wolves)

Finals

 * Men's Grand Final MVP: Andrew Ferguson (Perry Lakes Hawks)
 * Women's Grand Final MVP: Alexandra Sharp (Willetton Tigers)