Joseph William Walker, OAM is an Australian swimmer with an intellectual disability.

At the 1992 Paralympic Games for Persons with Mental Handicap, he won nine gold medals from nine events.

[3] This performance was unmatched in Australian Olympic and Paralympic history at the time.

After the Games, he was awarded an Australian Institute of Sport Athletes with a Disability scholarship.

He represented New South Wales for many years and represented Australia at the 2003 Special Olympics World Summer Games in Dublin, Ireland where his team took out the Silver Medal.