there is luggage storage at the airport.
but in all reality u have to do two things. either bring it to macau and check in at ferry in macau.
http://www.hongkongairport.com/e ... ce-at-a-glance.html
or second
leave it at the airport luggage storage and go through airport express etc etc.
http://www.hongkongairport.com/e ... ia-faq.html#Baggage
there are your two options.
if i were you, i would take it to macau cause honestly having to retrace steps to hkia via ferry--->hkia express--->check in----> customs
its not worth just lugging it one way to macau and then leaving it with the ferry check in service. the time u gain with the ferry vs. carrying luggage. i think carrying luggage is less of a hassle.
w