|Date of birth:||March 28, 1965|
|Place of birth:||Toronto, Ontario, Canada|
|CFL Draft:||1988 / Round: 3 / Pick: 22|
|Drafted by:||Ottawa Rough Riders|
|Career highlights and awards|
Leon Hatziioannou (born March 28, 1965) is a former Canadian football defensive lineman who played eight seasons in the Canadian Football League with the Ottawa Rough Riders, Winnipeg Blue Bombers and Toronto Argonauts. He was drafted by the Ottawa Rough Riders in the third round of the 1988 CFL Draft. He played CIS football at Simon Fraser University.