Rūta Meilutytė (Lithuanian pronunciation: ​[ruːˈtɐ mʲɛɪ̯ɫʊˈtʲi̇̂ːtʲeː]; born 19 March 1997) is a Lithuanian swimmer, Olympic gold medalist, and world record-holder. She is the current world record holder in the 100 metre breaststroke (short course).