Troy Hearfield (born 31 October 1987 in Tamworth, New South Wales) is an Australian former footballer who played as a right back.

Hearfield made his debut for the Mariners, scoring in a pre-season friendly match against Scottish giants Celtic.

[7] On 28 October 2012, Hearfield failed a doping test following the Mariners' round 4 match against Melbourne Heart.

[10] He has represented Australia at both U-20 and U-23 level, however he was unlucky to miss out on selection for the Australian Olympic Football team.

Newcastle Jets: Central Coast Mariners: On 9 November 2023, Hearfield was jailed for 12 months after pleading guilty to larceny valued at less than $2000, shoplifting, possessing a prohibited drug and three counts of driving a motor vehicle during a disqualification period.