Alex Witherden (born 10 September 1998) is a professional Australian rules footballer playing for the West Coast Eagles in the Australian Football League (AFL).
He was drafted by Brisbane with pick 23 in the 2016 national draft. He made his debut in the loss to Greater Western Sydney at the Gabba in round 14 of the 2017 season. After the thirty-one point loss to Richmond at Etihad Stadium in round 17, in which he recorded twenty-eight disposals and four tackles, he was the round nominee for the 2017 AFL Rising Star.