2025 SEA Games opening ceremony
| Part of the 2025 SEA Games | |
| Date | 9 December 2025 |
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| Time | 19:00 – 21:30 ICT (UTC+7) |
| Venue | Rajamangala Stadium |
| Location | Bangkok, Thailand |
| Coordinates | 13°45′19″N 100°37′22″E / 13.75528°N 100.62278°E |
| Also known as | We Are One (Thai: เราเป็นหนึ่งเดียว) |
| Filmed by | National Broadcasting Services of Thailand (NBT) |
| Footage | 2025 SEA Games opening ceremony in FPT Bóng Đá Việt (FPT Vietnamese Football) on YouTube |
| Part of a series on |
| 2025 SEA Games |
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The opening ceremony of the 2025 SEA Games took place on 9 December 2025 across Bangkok, began at 19:00 ICT (12:00 UTC) and ended at 21:30 ICT (14:30 UTC). The Games was formally opened by the king of Thailand, Vajiralongkorn. The ceremony marked the decades of the 1975, 1985 and 1995 Southeast Asian Games.