William Mac Bailey (27 January 1888 – 5 November 1952) was an Australian rugby league player.
Bailey, known as "Jerry", was a three-quarter and started playing rugby league as a member of the newly formed Newcastle Rebels in the 1908 NSWRFL season.
His first season was good enough to earn him a national call up for the 1908–09 tour of Great Britain, where he was restricted to the minor matches.
[1] A barber by profession, Bailey served three years as president of Newcastle Rugby League and also coached locally during his post-playing career.
[2] Bailey's grandson, Gary Martine, played for Parramatta in the 1980s.