Triin Aljand (born 8 July 1985) is a retired Estonian swimmer who won a silver medal at the 2012 European Aquatics Championships in 50 m butterfly. She competed in the 2004, 2008 and 2012 Summer Olympics in the 50 m and 100 m freestyle and 100 butterfly, but never reached the finals. She also participated in multiple FINA World Aquatics Championships.