Geo Chiu
| No. 18 – Terrafirma Dyip | |
|---|---|
| Position | Center |
| League | PBA |
| Personal information | |
| Born | May 18, 2001 Manila, Philippines |
| Nationality | Filipino |
| Listed height | 6 ft 10 in (2.08 m) |
| Career information | |
| High school | Pace Academy (Quezon City) Ateneo (Quezon City) |
| College | Ateneo |
| PBA draft | 2025: 1st round, 1st overall pick |
| Drafted by | Terrafirma Dyip |
| Playing career | 2024–present |
| Career history | |
| 2024–2025 | Ehime Orange Vikings |
| 2025 | Abra Solid North Weavers |
| 2026–present | Terrafirma Dyip |
| Career highlights | |
| |
Shaun Geoffrey Chiu (born May 18, 2001) is a Filipino professional basketball player for the Terrafirma Dyip of the Philippine Basketball Association (PBA).
Chiu was a three-time UAAP champion with one juniors' title and two seniors' titles, all while playing for the Ateneo Blue Eagles.
In 2024, he joined the Ehime Orange Vikings in the second division of Japan's B.League. The following year, he returned to the Philippines, this time with the Abra Solid North Weavers of the Maharlika Pilipinas Basketball League. In September 2025, Chiu was drafted first overall by the Terrafirma Dyip during the PBA season 50 draft.
He also suited up for the Philippines national team in international competitions.