Juraj Tarr (born 18 February 1979) is a Slovak flatwater sprint canoeist who competes in two-man (K-2) and four-man (K-4) events. He participated in four Olympics in the K-4 1000 m event and won silver medals in 2008 and 2016, placing fourth in 2000 and sixth in 2012. He also won eight medals at the ICF Canoe Sprint World Championships in 2005–2015, including four gold medals.
Tarr belongs to the Hungarian minority in Slovakia. He took up canoeing aged eight, following his father Juraj Tarr Sr., who competed internationally for Czechoslovakia. He was named Slovak Kayaker of the Year in 2014 (together with Erik Vlček) and in 2015. Earlier in 1997 he was diagnosed with thyroid cancer and semi-retired from sport for three years to undergo intensive treatment.