Žiga Šeško
| Country (sports) | Slovenia |
|---|---|
| Residence | Bordighera, Italy |
| Born | 27 July 2008 |
| Height | 1.92 m (6 ft 4 in) |
| Plays | Right-handed (two-handed backhand) |
| Coach | Riccardo Piatti, Dejan Šeško |
| Prize money | US $4,650 |
| Singles | |
| Career record | 1–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 978 (24 November 2025) |
| Current ranking | No. 981 (9 February 2026) |
| Grand Slam singles results | |
| Australian Open Junior | W (2026) |
| Wimbledon Junior | QF (2025) |
| US Open Junior | 1R (2025) |
| Doubles | |
| Career record | 0–1 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 1,296 (3 November 2025) |
| Current ranking | No. 1,300 (9 February 2026) |
| Grand Slam doubles results | |
| Australian Open Junior | QF (2026) |
| Wimbledon Junior | 1R (2025) |
| US Open Junior | 1R (2025) |
| Last updated on: 9 February 2026. | |
Žiga Šeško (born 27 July 2008) is a Slovenian tennis player. He has a career-high ATP singles ranking of No. 978 achieved on 24 November 2025 and a doubles ranking of No. 1,296 reached on 3 November 2025.
Šeško won the boys' singles title at the 2026 Australian Open.