Lopeti Timani (born 28 September 1990) is a Tongan professional rugby union player. His usual position is second row or number 8. After two seasons with the NSW Waratahs in Super Rugby, he signed on to play for the Melbourne Rebels in 2014. He now plays for Cardiff Rugby in Wales. He played 12 times for Australia in 2016, and in 2021 played for Tonga, becoming the first player to represent a second national team since World Rugby changed its eligibiity rules.