Isakeli "Isa" Nacewa (born 22 July 1982) is a former rugby union player and coach. Born in New Zealand of Fijian descent, he represented the Fiji national team, winning one cap in 2003. Nacewa was a utility back who played for the Blues in the Super Rugby competition and Auckland in the Air New Zealand Cup. Nacewa moved to Leinster in 2008, and over two spells won four European Cups, and captained the team to European Champions Cup and Pro14 titles in his final season. He retired from playing at the end of the 2017–2018 season.