| Competition: | Taiwan Football Premier League |
| Winners: | Tainan City F.C. |
| Relegated: | Hasus TSU F.C. Flight Skywalkers F.C. |
| Continentalcup1: | AFC Cup |
| Continentalcup1 Qualifiers: | Tainan City F.C. |
| League Topscorer: | Marco Fenelus (11 goals) |
| Longest Wins: | Taiwan Steel FC (6 matches) |
| Longest Unbeaten: | Taipower FC (13 matches) |
| Longest Winless: | Land Home NTUS FC (10 matches) |
| Longest Losses: | Land Home NTUS FC (9 matches) |
| Tv Partner(S): | Video Land Network CTFA TV (YouTube live streaming) |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
The 2021 season of the Taiwan Football Premier League was the fifth season of top-flight association football competition in Taiwan under its current format. The Taiwan Football Premier League includes eight teams. The season began on 11 April 2021.[1]
A total of eight teams compete in the league. Taiwan Steel are the defending champions. Ming Chuan were relegated at the end of the 2020 season, to be replaced by inaugural Challenge League champions CPC Corporation. Red Lions were taken over in late 2020 and left the league, relaunching as a new entity called Flight Skywalkers.
| Team | Location | Stadium | Capacity | Head Coach | Last Season | |
|---|---|---|---|---|---|---|
| CPC Corporation | Kaohsiung |  Zhong Jian-wu | 1st, TFCL | |||
| Flight Skywalkers | Taipei | Taipei Municipal Stadium | 20,000 | Chang Wu-yeh | 7th (replaced Red Lions) | |
| Hang Yuen | New Taipei | Fu Jen Catholic University Football Field | 3,000 | Hung Ching-hwai | 5th | |
| NTUS | Taichung | Taichung Taiyuan Football Pitch | 500 | Chao Jung-jui | 6th | |
| Taipower | Kaohsiung | Kaohsiung National Stadium | 55,000 | Chen Kuei-jen | 2nd | |
| Tatung | Taipei | Taipei Municipal Stadium | 20,000 | Chiang Mu-tsai | 4th | |
| Taichung FUTURO | Taichung | Taichung Taiyuan Football Pitch | 500 | Vom Ca-nhum | 3rd | |
| Taiwan Steel | Tainan | Tainan Football Field | 15,000 | Luo Chi-cong | 1st |
The league was scheduled to be played over 14 rounds as a double round-robin.
At the end of the season, the seventh-placed team from the TFPL will enter a play-off with the second-placed team from the 2021 Taiwan Football Challenge League for a spot in the 2022 Taiwan Football Premier League.