Thomas Christopher Cannon (born 28 December 2002) is a professional footballer who plays as a striker for EFL Championship club Sheffield United.

[4] He made his senior debut with Everton as a late substitute in a 4–1 EFL Cup loss to AFC Bournemouth on 8 November 2022.

[19][20] On 23 January 2025, Cannon signed for Championship club Sheffield United for an undisclosed transfer fee that was reported to be worth up to £10 million.

Cannon was next called up to an Under 20s squad in March 2022 and played in a friendly match against an Ireland Amateurs side.

[27] In May 2023, Cannon was called into a training camp with the Republic of Ireland senior national team by manager Stephen Kenny.