William Henzell (born 1982) is a right-handed Australian Table Tennis player. He was born in Adelaide and moved to Sweden at the age of 14. His highest international ranking was 90 in 2012. He has represented Australia many times, including securing Australia's first Commonwealth Games table tennis singles medal with a silver medal at the 2006 Commonwealth Games. He was inducted into the Australia Table Tennis Hall of Fame at the age of 26, 20 years younger than any other of the inductees.
In 2010 William, in partnership with top Australian player Robert Frank, created the online table tennis coaching website ttedge.com.