Hilary Stellingwerff (née Edmondson; born August 7, 1981 in Sarnia) is a Canadian track and field middle-distance runner. She competed in the 1500m event at the 2012 Summer Olympics, reaching the semifinals. She personal best for the 1500 metres is 4:05.08 minutes, set in 2012.
Stellingwerff was an All-American runner for the Wisconsin Badgers track and field team, finishing 4th in the mile run at the 2004 NCAA Division I Indoor Track and Field Championships.
She was runner-up at the Canadian Track and Field Championships in 2012, where she achieved the Olympic qualifying standard.
In July 2016 she was officially named to Canada's Olympic team.