2018–19 Hong Kong Third Division League

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. The season began on 16 September 2018 and ended on 26 May 2019.

Promoted to Second Division

 * North District
 * St. Joseph's

Eliminated from league

 * Tuen Mun FC
 * KMB

Relegated from Second Division

 * Kwai Tsing
 * GFC Friends
 * Sai Kung
 * Fukien

New Clubs

 * CFCSSHK
 * MLFA