Arecibo may refer to:

Places Arecibo, Puerto Rico, USA; a municipality located by the Atlantic Ocean Arecibo barrio-pueblo, Arecibo, USA; a borough and county seat of Arecibo municipality Senatorial District of Arecibo, in the state senate of Puerto Rico Roman Catholic Diocese of Arecibo, in Puerto Rico Río Grande de Arecibo (), Puerto Rico; a river 4337 Arecibo, an Outer Main-belt Asteroid discovered in 1985 Arecibo Vallis, a valley on Mercury

Facilities and structures Arecibo Observatory, an astronomical radio observatory located approximately south-southwest from the city of Arecibo Arecibo Telescope, a very sensitive radio telescope located at the observatory Arecibo Planetary Radar, a radar astronomy station located at the radio telescope Arecibo Telescope University of Puerto Rico at Arecibo (UPR-Arecibo), Arecibo, Puerto Rico, USA Arecibo Light (), Arecibo, Puerto Rico; a lighthouse

Other uses Arecibo message, a message beamed into space via frequency modulated radio waves in 1974 Arecibo (EP), an extended play by English singer Little Boots Arecibo Captains, a team in National Superior Basketball, the Puerto Rican basketball league

See also

Arasibo (15th century), a Taino Amerind chief GALEX Arecibo SDSS Survey, an astronomical survey