| Event: | Chess |
| Games: | 2005 Southeast Asian Games |
| Venue: | Tagaytay City Convention Center |
| Location: | Tagaytay, Cavite |
| Date: | November 27 – December 5 |
| Prev: | 2003 |
| Next: | 2011 |
Chess at the 2005 Southeast Asian Games took place at the Tagaytay City Convention Center in Tagaytay, Cavite, Philippines.
Chess is not one of the Olympic Games events but is included in the Southeast Asian Games.
| Blitz | ||||
| nowrap | ||||
| Rapid | ||||
| Standard | ||||
| Rapid team | Nguyễn Anh Dũng Nguyễn Ngọc Trường Sơn Từ Hoàng Thông Lê Quang Liêm Dương Thế Anh | Eugenio Torre Rogelio Antonio Jr. Nelson Mariano II Petronio Roca Barlo Nadera | valign=top | Wong Meng Kong Wu Shaobin Jason Goh Koon-Jong Goh Wei Ming |
| Standard team | Nguyễn Ngọc Trường Sơn Lê Quang Liêm Nguyễn Anh Dũng Đinh Đức Trọng | Eugenio Torre Rogelio Antonio Jr. Oliver Barbosa Ronald Dableo | Susanto Megaranto Edhi Handoko Taufik Halay Tirto |
| Blitz | |||||||
| Standard | |||||||
| Standard team | nowrap | Hoàng Thị Bảo Trâm Nguyễn Thị Thanh An Lê Thanh Tú Trần Thị Kim Loan | nowrap | Sheerie Joy Lomibao Beverly Mendoza Enerose Magno Shercila Cua | nowrap | Lisa Karlina Lumongdong Evi Lindiawati Irine Kharisma Sukandar Upi Darmayana Tamin |