Trevor Harley Bayliss OBE (born 21 December 1962) is an Australian cricket coach and former first class cricketer. He played for New South Wales between 1985 and 1997 before becoming a coach.
Bayliss was coach of England from 2015 to 2019. He coached Sri Lanka between 2007 and 2011, a period which culminated in his team finishing as runners-up in the 2011 World Cup. He has also coached the Sydney Sixers in Australia's Big Bash League and the Kolkata Knight Riders in the Indian Premier League. Under his management, the Knight Riders became IPL champions, twice, in 2012 and 2014. He also led the Sixers to a BBL title in the 2011–12 season and a CLT20 title the same year. He has also been appointed as a Head coach for Sunrisers Hyderabad in the Indian Premier League for the year 2020.