g MTR 
There are plans for the MTR to extend the planned South Island Line to Ap Lei Chau. There will be two stations in the island, one "Lei Tung" for Lei Tung Estates and one "South Horizons" serving Marina Square, a mini mall with a food market, and South Horizons, a private estates covering the western edge of the island.
g Tram
None.
g Bus
Kowloon Motor Bus Company operates services from Ap Lei Chau to other Islands / N.T.
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g Bus
A large array of routes are provided by Citybus and Firstbus.
View Services 
g Mini Bus
Those in the know... will know there are two types of minibus services:
Red Roof - These follow relativley undocumented routes, Check the front and flag them down if they are heading where you need.
Green Roof - These are the documented and numbered routes, these typically have fixed pick up points, however they may be flagged down when there is space on board.
27 Ap Lei Chau (Wai Fung Street) to Aberdeen (Sai On Street)
29 Ap Lei Chau Estate to Shum Wan Public Transport Terminus
29A Ap Lei Chau Estate to Ocean Park (Tai Shue Wan)
36 Ap Lei Chau (Ping Lan Street) to Wan Chai (Stewart Road)
36A Ap Lei Chau (Ping Lan Street) to Wan Chai (Stewart Road)
36X Ap Lei Chau (Ping Lan Street) to Causeway Bay (Lee Garden Road)
37 Ap Lei Chau (Ping Lan Street) to Ap Lei Chau Estate / Lei Tung Estate
37A Ap Lei Chau (Ping Lan Street) to Ap Lei Chau Estate / Lei Tung Estate
39C Yue On Court (Ap Lei Chau) to Aberdeen Detail
39M Yue On Court (Ap Lei Chau) to Tin Hau Station
View Services 