| Club: | Polis Di-Raja Malaysia |
| Season: | 2021 |
| Owner: | Acryl Sani |
| Ownertitle: | President |
| Chairman: | Hafiz Zainal Abidin |
| Chrtitle: | CEO |
| Manager: | Wan Rohaimi Wan Ismail[1] |
| Mgrtitle: | Head coach |
| Stadium: | KLFA Stadium |
| League: | Malaysia Premier League |
| League Result: | 8th |
| League Topscorer: | Bruno Suzuki (7) |
| Season Topscorer: | Bruno Suzuki (7) |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
The 2021 season was Polis Di-Raja Malaysia's 31st season in existence and the first season in the Malaysia Premier League since relegation from Malaysia Super League last year.[2] [3] [4] [5] [6] [7] Along with the league, the club will also participate in the Malaysia Cup.
On 24 December 2020, Mat Zan Mat Aris has been appointed as club's new head coach on two-year contract.[8]
On 28 February 2021, Lazarus Kaimbi and Bruno Suzuki joined the club.[9]
On 31 March 2021, Wan Rohaimi Wan Ismail joined as club's new head coach after Mat Zan Mat Aris contract has been terminated.[10]
See main article: 2021 Malaysia Premier League.
[12] |-! colspan=14 style="background:; color:; text-align:center"| Players transferred out during the season|}