| Competition: | Hong Kong Third Division |
| Season: | 2018–19 |
| Winners: | CFCSSHK |
| Promoted: | CFCSSHK Kwai Tsing |
| Relegated: | MLFA Freemen FC |
| League Topscorer: | Leung Pok Hei (Kui Tan) (35 goals) [1] |
| Biggest Home Win: | (4 November 2018) |
| Biggest Away Win: | (28 October 2018) |
| Highest Scoring: | (28 October 2018) |
| Matches: | 182 |
| Total Goals: | 643 |
| Longest Wins: | 10 matches Kui Tan |
| Longest Unbeaten: | 12 matches CFCSSHK |
| Longest Winless: | 13 matches Ornament |
| Longest Losses: | 8 matches MLFA |
| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The 2018–19 Hong Kong Third Division League was the 5th season of Hong Kong Third Division since it became the fourth-tier football league in Hong Kong in 2014–15.[2] The season began on 16 September 2018 and ended on 26 May 2019.