PUBLIC tickets for both preliminary finals have sold out.

More tickets may become available later in the week for both Friday night's Adelaide-Geelong clash at Adelaide Oval, and Saturday's Richmond-GWS match at the MCG, if club, AFL or function allocations are not exhausted.

If so, they will go on sale via Ticketek at 2pm ACST on Thursday for the Crows v Cats game, or 12pm AEST for the Tigers v Giants match.

AFL Reserve seats go on sale on Tuesday morning.