2012–13 Hong Kong Third Division League is the 62nd season of Hong Kong Third Division League, a football league in Hong Kong.
The 2012–13 season of the Hong Kong Third Division League consists of 14 clubs, including the 2 teams relegated from 2011–12 Second Division, 3rd placed to 10th placed team of 2011–12 Third 'A' Division and the top 4 teams of 2011–12 Third 'District' Division.
The detail of the clubs is as follows.