Jiuta Beletinikoloni Lutumailagi (born 3 June 1984) is a Fijian former rugby union international.
Lutumailagi, a Fijian IRB Sevens World Series representative, was in the sevens team which claimed a silver medal at the 2009 Pacific Mini Games in the Cook Islands. He played his rugby mainly as a fly-half and gained three caps for the Flying Fijians in 2013, as a substitute against Japan and Canada during the Pacific Nations Cup, then as the starting fly-half in Fiji's win over the Classic All Blacks, a match celebrating the Fiji Rugby Union centenary.
After switching codes, Lutumailagi was a Fiji rugby league nines representative at the 2015 Pacific Games.