| 25 Dec - 1 Jan | 2020年度香港週年定向錦標賽 Annual Orienteering Championships 2020 |  Hong Kong | Hong Kong | | int | | M | 29/11* | |
| 3 Jan | 2020/2021 色級定向活動 2020/2021 Colour-Coded Event |  Orienteering Association of Hong Kong | Hong Kong | | loc | | M | | |
| 10 Jan | 香港定向排名聯賽2021 (短距離) Hong Kong Orienteering Ranking League 2021 (Sprint) | Orienteering Association of Hong Kong | Hong Kong | | club | | S | | |
| 17 Jan | 香港定向排名聯賽2021 (中/長距離) Hong Kong Orienteering Ranking League 2021 (Middle/Long) | Orienteering Association of Hong Kong | Hong Kong | | club | | M | | |
| 23 Jan | Joint School District Orienteering Championships 2020/2021 | Orienteering Association of Hong Kong | Hong Kong | | loc | | M | | |
| 24 Jan | NPV x Kakato Men Dog Orienteering Race 2021 |  Hong Kong Orienteering Club | Hong Kong | | loc | T | M | | |
| 24 Jan | 2021年度野外定向接力賽 - 大嶼山昂坪 Orienteering Relay Event 2021 - Ngong Ping, Lantau |  MOPC
Orienteering Association of Hong Kong | Hong Kong | | club | R | M | | |
| 30 Jan - 31 Jan | AYP Rogaine Charity Race 2021 |  The Hong Kong Award for Young People | Hong Kong | | loc | T | L | | |
| 6 Feb | Joint School Orienteering Championships 2020/2021 - Final | Orienteering Association of Hong Kong | Hong Kong | | loc | | M | | |
| 20 Feb | HKOC Night Orienteering Event 2021/2022 cum Hong Kong Night Open Orienteering Event | Hong Kong Orienteering Club | Hong Kong | | loc | | M | | |
| 28 Feb | 香港定向排名聯賽2021 (中/長距離) Hong Kong Orienteering Ranking League 2021 (Middle/Long) | Orienteering Association of Hong Kong | Hong Kong | | club | | M | | |
| 7 Mar | 香港定向排名聯賽2021 (短距離) Hong Kong Orienteering Ranking League 2021 (Sprint) |  Akinalliance
Orienteering Association of Hong Kong | Hong Kong | | club | | S | | |
| 14 Mar | 2020/2021 色級定向活動 2020/2021 Colour-Coded Event | Orienteering Association of Hong Kong | Hong Kong | | club | | M | | |
| 21 Mar | HKOC 野外定向賽 2021 | Hong Kong Orienteering Club | Hong Kong | | loc | | M | | |
| 21 Mar | 第二十四屆白理義先生紀念賽 - 鶴藪 24th Mr. Paddy Birney Memorial Score Event - Hok Tau |  A123
Orienteering Association of Hong Kong | Hong Kong | | club | T | M | | |
| 19 Dec - 26 Dec | Hong Kong O Week 2021 (Individual) | Orienteering Association of Hong Kong | Hong Kong | | nat | | S | | |
| 24 Dec - 27 Dec | 4th Asian Junior and Youth Orienteering Championships | Hong Kong | Hong Kong | | int | | M | | |
| 27 Dec | Hong Kong O Week 2021 (Sprint Relay) | Orienteering Association of Hong Kong | Hong Kong | | nat | R | S | | |
