“Kye has a fantastic reputation over in Australia and his talent has seen him rise to the top of the game.
“To get another international player in the door is a big coup and I’m really looking forward to working with him.”
Rowes joins compatriots Nathaniel Atkinson and Cammy Devlin at Hearts, whose sporting director Joe Savage says the club fended off late interest from other Scottish sides.
“He’s clearly a very talented player and has the potential to get even better,” added Savage.
“We’ve all seen that Hearts can provide an environment for players to flourish, which is why Kye has chosen us as the best place to continue his career despite late attempts from other Scottish clubs to get involved.”