St Kilda Marina is Melbourne's premier marina facility, located approximately six kilometres from the CBD at the gateway between the St Kilda and Elwood foreshores, adjacent to the mouth of the Elwood Canal.

Built in 1969 on 20 acres of land reclaimed from the sea, it is recognised as the first marina of its kind in Australia, modelled on North American design standards of the era.

The marina offers wet and dry berthing, trailer and jet ski storage, a public boat ramp, and an on-water fuel dock. Activities supported include sailing, cruising, recreational fishing, water skiing, and various water sports.

With 350 metres of frontage along Marine Parade, it serves as a major access point to Port Phillip Bay for the broader Melbourne metropolitan area.