2021 Women's Premiership (Northern Ireland)
| Champions | Glentoran (9th title) |
|---|---|
| Women's Champions League | Glentoran |
| Matches played | 60 |
| Highest scoring | Cliftonville 12–0 Derry City (18 August 2021) |
← 2020 2022 → | |
The 2021 Northern Irish Women's Premiership, was the 18th season of the top-tier women's football league in Northern Ireland. Glentoran were the defending champions.
Glentoran won their ninth league title, and second consecutive title, after a 3–2 home victory over Cliftonville in the penultimate round of fixtures on 21 September 2021.
For the 2021 season, no team was relegated as the league was to increase to eight teams for the 2022 season with a view to making the league professional in the 2023 season.