Stéphanie Dubois (born October 31, 1986) is a Canadian professional tennis player. She turned professional in 2004 and she achieved a career-best ranking of No. 95 in the world on May 26, 2008.
Dubois made her first appearance in the Fed Cup in July 2004 in the World Group Play-offs against Switzerland. At the 2006 Rogers Cup, she defeated Kim Clijsters in 2006 when Clijsters retired from the match, her biggest win so far. In 2007, Dubois and Renata Voráčová reached the Bell Challenge final but lost to Christina Fusano and Raquel Kops-Jones in straight sets. In 2008, she got in the main draw of the Australian Open and the French Open, participating in a first in the latter, where two Quebec native players were in the main draw by their own ranking for the first time. On June 23, 2008 Dubois had 3 match points against 8th seed Anna Chakvetadze at Wimbledon but lost 2–6 6–1 8–6. In 2009 in Vancouver, Dubois won a $75,000 ITF Women's Circuit by beating the top seed Sania Mirza in three sets, 1–6, 6–4, 6–4. At the US Open she defeated Kristina Mladenovic in the first round, her first main draw win, before losing to Sorana Cîrstea in the second round. She also reached the second round at Wimbledon in 2011 where she lost to World No. 11 Andrea Petkovic by the score of 6–3, 4–6, 6–3.