Jennifer Judith Jones OM (born July 7, 1974) is a Canadian curler. She was the Olympic champion in curling as skip of the Canadian team at the 2014 Sochi Games. Jones is the first female skip to go through the Games undefeated. The only male skip to achieve this was fellow Canadian Kevin Martin in 2010. Jones and her team were the first Manitoba-based curling team to win an Olympic gold medal. They won the 2008 World Women's Curling Championship and were the last Canadian women's team to do so until Rachel Homan in 2017. She won a second world championship in 2018. Jones also represented Canada at the 2022 Winter Olympics, where her team placed fifth.
Jones has won the Canadian women's curling championship a record-tying six times (in 2005, 2008, 2009, 2010, 2015, and 2018), equalling Colleen Jones for total Canadian women's championships. Along with her national championships, Jones has also won the Manitoba women's provincial championship nine times. In a total of eighteen Tournament of Hearts appearances, she has won 177 games, more than any other curler. In addition to her accomplishments internationally, nationally, and provincially, she has also won seventeen Grand Slam of Curling events on the World Curling Tour, ten of which are recognized as current Grand Slam victories. In 2019, Jones was named the greatest Canadian curler in history by The Sports Network (TSN).