Cuajiniquil is a district of the Santa Cruz canton, in the Guanacaste province of Costa Rica.
Cuajiniquil was created on 11 November 1974 by Decreto Ejecutivo 4315-G. Segregated from Veintisiete de Abril.
Cuajiniquil has an area of kmò and an elevation of metres.
Administrative center of the district is the village of San Juanillo.
Other villages in the Cantons are Alemania, Bolillos, Cuajiniquil, Chiquero, Fortuna, Jazminal, Lagarto, Libertad, Limonal, Manzanillo, Marbella, Ostional, Palmares, Piedras Amarillas, Progreso, Punta Caliente, Quebrada Seca, Quebrada Zapote, Rayo, Roble, Rosario, Santa Cecilia, Santa Elena, Socorro, Unión and Veracruz.
For the 2011 census, Cuajiniquil had a population of inhabitants.
The district is covered by the following road routes: