Mark Harris (Welsh footballer)
| 
 Harris pictured outside the Cardiff City Stadium in February 2018  | |||
| Personal information | |||
|---|---|---|---|
| Full name | Thomas Mark Harris | ||
| Date of birth | 29 December 1998 | ||
| Place of birth | Swansea, Wales | ||
| Height | 6 ft 0 in (1.82 m) | ||
| Position(s) | Striker, winger | ||
| Team information | |||
Current team  | Oxford United | ||
| Number | 9 | ||
| Youth career | |||
| 2006–2017 | Cardiff City | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) | 
| 2017–2023 | Cardiff City | 87 | (9) | 
| 2018–2019 | → Newport County (loan) | 16 | (2) | 
| 2019 | → Port Vale (loan) | 6 | (0) | 
| 2019–2020 | → Wrexham (loan) | 24 | (3) | 
| 2023– | Oxford United | 89 | (21) | 
| International career‡ | |||
| 2014–2015 | Wales U17 | 5 | (2) | 
| 2016–2017 | Wales U19 | 6 | (2) | 
| 2017 | Wales U20 | 3 | (0) | 
| 2017–2020 | Wales U21 | 20 | (3) | 
| 2021– | Wales | 11 | (0) | 
| 
*Club domestic league appearances and goals, correct as of 22:43, 13 May 2025 (UTC) ‡ National team caps and goals, correct as of 23:39, 9 June 2025 (UTC)  | |||
Thomas Mark Harris (born 29 December 1998) is a Welsh professional footballer who plays for EFL Championship club Oxford United and the Wales national team. A versatile forward, he can play as a winger or striker.
Harris represented Wales at under-17, under-19, under-20 and under-21 level. He turned professional at Cardiff City in December 2016 and spent the 2018–19 season on loan at Newport County and Port Vale. He spent the first half of the 2019–20 season on loan at Wrexham before breaking into the Cardiff first team during the 2020–21 campaign, though he was released in June 2023. He joined Oxford United the following month and was promoted from League One via the play-offs in 2024.