| Competition: | Hong Kong Third Division League |
| Season: | 2015–16 |
| Winners: | Hoi King |
| Promoted: | Hoi King Central & Western |
| Relegated: | Kowloon Cricket Club HKFYG |
| Matches: | 240 |
| Total Goals: | 829 |
| Prevseason: | 2014–15 |
| Nextseason: | 2016–17 |
The 2015–16 Hong Kong Third Division League is the 2nd season of Hong Kong Third Division League since it became the fourth-tier football league in Hong Kong in 2014–15.
The league started on 6 September 2015 and ended on 22 May 2016.
Promoted to Second Division
Eliminated from league
Relegated from Second Division
New Clubs