Samuel Arthur Thaiday (/θaɪdeɪ/; born 12 June 1985) is an Australian former professional rugby league footballer who played for the Brisbane Broncos in the National Rugby League, serving as their captain from 2012 until 2013. An Australian international and Queensland State of Origin representative second-row, he can also play prop and lock as well as hooker and spent all of his career at the Broncos, with whom he won the 2006 premiership. In 2008, Australia's centenary of rugby league and Thaiday's sixth year at the top level, he was one of only three current players to be named in the Indigenous Australian rugby league team of the century. On 6 July 2018, Thaiday announced his intention to retire from the NRL at the end of the 2018 season.