| Competition: | Hong Kong Second Division |
| Season: | 2020–21 |
| Winners: | Tung Sing |
| Promoted: | None |
| Relegated: | None |
| League Topscorer: | Pang Chung Hin (Tung Sing) 9 goals |
| Biggest Home Win: | (13 June 2021) (20 June 2021) |
| Biggest Away Win: | (30 May 2021) |
| Highest Scoring: | (21 March 20221) |
| Matches: | 91 |
| Total Goals: | 314 |
| Longest Wins: | 5 matches Kwong Wah |
| Longest Unbeaten: | 9 matches Kwong Wah |
| Longest Losses: | 8 matches Yau Tsim Mong |
| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 Hong Kong Second Division League was the 7th season of the Hong Kong Second Division since it became the third-tier football league in Hong Kong in 2014–15.[1] The season began on 29 November 2020.
Due to the forced cancellation of the 2019–20 season, there were no teams promoted to the First Division and no teams relegated to the Third Division this season.[2]