2017–18 Hong Kong Third Division League

The 2017–18 Hong Kong Third Division League was the 4th 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 2017 and ended on 13 May 2018.

From Third Division
Promoted to Second Division
 * Happy Valley
 * Fu Moon
 * GFC Friends
 * Fukien

Eliminated from league
 * Telecom
 * King Mountain

Withdrawn from league
 * V Sports

To Third Division
Relegated from Second Division
 * Kwok Keung
 * Tuen Mun FC

New Clubs

 * Freemen FC
 * Lung Moon
 * KMB