Rama IV Bridge (Thai: สะพานพระราม ๔, RTGS: Saphan Phra Ram Si, pronounced [sā.pʰāːn pʰráʔ rāːm sìː]) is a bridge over Chao Phraya River in the area of Pak Kret District, Nonthaburi Province, outskirts Bangkok.

Rama IV Bridge is a bridge across Chao Phraya River, connecting Bang Tanai and Pak Kret Subdistricts in Pak Kret District, northeastern Nonthaburi Province.

It is not related to Rama IV Road in Bangkok in any way.

King Bhumibol (Rama IX) named it 'Rama IV' in order to remember King Mongkut (Rama IV).

King Vajiralongkorn (Rama X, while he was a Crown Prince) along with his wife Princess Srirasmi presided over the official opening ceremony on August 21, 2008.