The Guamaní River (Spanish: Río Guamaní) is a river of Guayama, Puerto Rico. In 1928, the Public Works department of Puerto Rico spent approximately $183,000 on a risk mitigation project at Guamaní River. There is a 30-meter truss bridge over the Guamaní River in Guayama, which was built in 1936, under a Franklin D. Roosevelt New Deal program.

See also

• Cayey Bridge: river crossing on the NRHP
• List of rivers of Puerto Rico

17°56′35″N 66°08′02″W / 17.9430233°N 66.1337769°W / 17.9430233; -66.1337769