Gretel II (KA-3) is an International 12-metre class racing yacht built for the America's Cup challenge series in 1970.

[1] Gretel II was skippered by Jim Hardy with Martin Visser as tactician and starting helmsman and Bill Fesq as navigator.

Intrepid won the first race when Gretel II's David Forbes was swept overboard but managed to hang onto the sail and scramble back on board.

Many observers, such as 1977 America's Cup winning skipper Ted Turner, believed that Gretel II was a faster boat than Intrepid but that the tactical cunning of Bill Ficker and Steve Van Dyke and the performance of the American crew were the deciding factors in the Americans' victory.

[4] Gretel II served as a trial horse for Alan Bond’s Southern Cross in the 1974 America's Cup.