Alex Walker (born 18 February 1984 in Sydney, Australia) is a rugby union hooker or prop for Esher in the Aviva Championship.
Although Walker started playing in his native Australia and has represented the Australia national under-21 rugby union team, he is qualified to play for England.
Walker joined the Newcastle Falcons in the summer of 2009 from Saracens.
His father, Roger Walker, is a former IFBB Mr. Universe. He won that title in 1976.