Guayas may refer to:
*
Guayas River
The Guayas River also called Rio Guayas is a major river in western Ecuador. It gives name to Guayas Province and is the most important river in South America that does not flow into the Atlantic Ocean or any of its marginal seas. Its total lengt ...
, Ecuador
*
Guayas Province
Guayas () is a coastal province in Ecuador. It is bordered to the west by ManabÃ, Santa Elena, and the Pacific Ocean (as the Gulf of Guayaquil); to the east by Los RÃos, BolÃvar, Chimborazo, Cañar, and Azuay; to the north by Los Rà ...
, Ecuador
*
BAE ''Guayas'', ships of the Ecuadorian navy
*
Guayas (chief), a legendary chief of the Huancavilcas in the coastal plains of modern Ecuador
*The fruit of the
mamoncillo
''Melicoccus bijugatus'' is a fruit-bearing tree in the soapberry family Sapindaceae, native or naturalized across the New World tropics including South and Central America, and parts of the Caribbean. Its stone-bearing fruits are edible. It is ...
tree
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fr:Guayas
