Mets de Guaynabo are a Puerto Rican professional basketball team based in Guaynabo, Puerto Rico. The Mets compete in the Baloncesto Superior Nacional (BSN) as a member of the league's B Division. Founded in 1935 as the original Cangrejeros of Santurce franchise, the team relocated to Guaynabo in 1976 and became the Guaynabo Mets. The Mets play their home games at Mario Morales Coliseum, named after Mario "Quijote" Morales, who led the team to its three championships during the 1980s. The Mets also reached the BSN finals in 1991 and 1993, losing both times to the Leones of Ponce.The team dissolved in 2015, but was reinstated with new ownership in 2019.

Guaynabo is a city, suburb of San Juan and municipality in the northern part of Puerto Rico, located in the northern coast of the island, north of Aguas Buenas, south of Cataño, east of Bayamón, and west of San Juan. Guaynabo is spread over 9 barrios and Guaynabo Pueblo. Guaynabo is considered, along with its neighbors – San Juan and the municipalities of Bayamón, Carolina, Cataño, Trujillo Alto, and Toa Baja – to be part of the San Juan metropolitan area. It is also part of the larger San Juan-Caguas-Guaynabo Metropolitan Statistical Area,.