Uvis Kalniņš (born October 24, 1993 in Valmiera) is a Latvian swimmer, who specialized in sprint freestyle events. He won a bronze medal in the men's 100 m freestyle at the 2011 European Junior Swimming Championships in Belgrade, Serbia, with a time of 50.18 seconds. Kalniņš is also a member of the swimming team for the Missouri State Bears, and an undergraduate student at Missouri State University in Springfield, Missouri.