The 2021–22 South West Peninsula League season was the 15th in the history of the South West Peninsula League, a football competition in England that feeds the Premier Division of the Western Football League.
Premier Division East features 20 teams, the same number as the previous season, after Ilfracombe Town and Millbrook were promoted to the Western League Premier Division.
Two clubs joined from the Devon Football League South & West Division: On 2 June 2021, Stoke Gabriel merged with Torbay Police, creating Stoke Gabriel & Torbay Police.
[4] Premier Division West features 18 teams, reduced from 20 the previous season after Helston Athletic, Mousehole and Saltash United were promoted to the Western League Premier Division.
One new club joined from the St Piran Football League West Division: