The 2015–16 Hong Kong FA Cup preliminary round is the 41st edition of the Hong Kong FA Cup and the 3rd edition of the Hong Kong FA Cup preliminary round. 42 teams from the Hong Kong First Division League, the Hong Kong Second Division League and the Hong Kong Third Division League competed in the preliminary round. The top 3 teams from the preliminary round qualified for the First Round proper in the 2015–16 Hong Kong FA Cup.