| Bridge Name: | Rama III Bridge |
| Native Name: | สะพานพระราม ๓ |
| Carries: | Six lanes of roadway |
| Crosses: | Chao Phraya River |
| Locale: | Bangkok, Thailand |
| Design: | Cantilever bridge |
| Mainspan: | 226m |
| Length: | 1864m |
| Width: | 23 m |
| Below: | 32 m |
| Begin: | October 1996 |
| Complete: | October 1999 |
| Coordinates: | 13.7015°N 100.4926°W |
The Rama III Bridge (th|สะพานพระราม 3,, pronounced as /th/), also known as the New Krungthep Bridge, is a bridge crossing the Chao Phraya River in Bangkok, Thailand. The bridge was completed in 1999 and was designed to alleviate traffic congestion on the adjacent Krungthep Bridge.[1] The bridge was named in honour of King Nangklao.