|Full name||Karl William Ouimette|
|Date of birth||June 18, 1992|
|Place of birth||Repentigny, Quebec, Canada|
|Height||1.83 m (6 ft 0 in)|
|San Francisco Deltas|
|2010–2012||Montreal Impact Academy|
|2015–2016||New York Red Bulls||18||(0)|
|2015–2016||→ New York Red Bulls II (loan)||6||(0)|
|2016||→ Jacksonville Armada (loan)||7||(0)|
|2017–||San Francisco Deltas||4||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of April 22, 2017.
‡ National team caps and goals correct as of November 11, 2016
On July 5, 2012, Ouimette signed a professional contract with the Montreal Impact, making him the first Academy player to sign with the senior squad. A couple weeks after being signed, Ouimette made his professional soccer debut in a league match against the Houston Dynamo. Ouimette came on as a substitute for Zarek Valentin in the 26th minute. Montreal went on to lose the match 3-0.
On October 19, 2013, Karl Ouimette scored his first MLS goal and game winner in a comeback 2-1 victory over the Philadelphia Union. The goal proved to be decisive to allow the Montreal Impact enter the MLS Cup playoffs for the first time in the team history. Ouimette also started both legs of the 2014 Canadian Championship helping the club to its second straight Canadian title. On February 6, 2015 Ouimette was waived by Montreal, effectively ending his time with the Impact.
New York Red Bulls
After an extended trial with MLS side New York Red Bulls, Ouimette was signed to a deal on March 4, 2015. The move reunited him with former Impact coach, Jesse Marsch. Ouimette's debut for the Red Bulls first team came against the New England Revolution on May 2, 2015.
Ouimette was loaned to affiliate side New York Red Bulls II during the 2015 season and made his debut for the side as part of the starting eleven on April 4, 2015 in a 4-1 victory over Toronto FC II, the first victory in club history. On June 23, 2015 Ouimette was selected to the USL Team of the Week for his performance for NYRBII in a 2-0 victory over Louisville City FC. On September 26, 2015 Ouimette scored two goals in extra time to help New York Red Bulls II to a 4-2 victory over Pittsburgh Riverhounds, advancing New York in the 2015 USL Playoffs.
Ouimette was released by the Red Bulls at the end of the 2016 season.
Jacksonville Armada (loan)
San Francisco Deltas
On November 8, 2013, Ouimette received his first call up to the Canadian national team by manager Benito Floro for two friendlies against Czech Republic on November 15 and Slovenia on November 19, 2013. He received his first cap as a substitute against Slovenia. He was substituted into Canada's September 9, 2014 match against Jamaica in the 88th minute. The match was dedicated to his sister, Julie, who died a few days earlier after a 12-year battle with Philadelphia chromosome-positive acute lymphoblastic leukemia.
- As of April 22, 2017
|New York Red Bulls||MLS||2015||11||0||0||0||0||0||0||0||11||0|
|New York Red Bulls II (loan)||USL||2015||5||0||0||0||0||0||1||2||6||2|
|Jacksonville Armada (loan)||NASL||2016||7||0||0||0||0||0||0||0||7||0|
|San Francisco Deltas||NASL||2017||4||0||0||0||0||0||0||0||4||0|
- "Defender Karl W. Ouimette becomes first ever Academy player to sign with the pros". Montreal Impact. Retrieved July 22, 2012.
- "Match Center: Houston v. Montreal". MLSsoccer.com. Retrieved July 22, 2012.
- "Montreal Impact playoff pursuit saved by youngster Karl Ouimette". canadasoccer.com. Retrieved October 19, 2013.
- "Impact waive defender Karl W. Ouimette". February 6, 2015.
- Sabetti, Nick (March 4, 2015). "Source: New York Red Bulls sign Canadian international Karl Ouimette".
- "New York Red Bulls add trio to initial 2015 roster". March 5, 2015.
- "Red Bulls II earn first victory in team history". newyorkredbulls.com. Retrieved April 4, 2015.
- "Dan Metzger named USL Player of the Week". newyorkredbulls.com. Retrieved June 23, 2015.
- "KARL OUIMETTE JOINS ARMADA FC ON LOAN FROM RED BULLS". armadafc.com. Jacksonville Armada. 24 June 2016. Retrieved 27 June 2016.
- SF Deltas. "Team News: Three More Signed Players Make Eleven". Medium"date=January 18, 2017.
- "Canada MNT announces roster for November friendlies". nationalpost.com. Retrieved November 8, 2013.
- Tremblay, Olivier (September 8, 2014). "Montreal Impact's Karl W. Ouimette mourning loss of sister after long battle with cancer".