A small four-stringed instrument, similar to a ukelele. Along with the arpa llanera, it is considered to be the national instrument of Venezuela. The Puerto Rican cuatro is a larger and differently shaped instrument with ten strings in five pairs.

One of the many variations of the guitar found throughout Spain and Latin America. The Puerto Rican variant is the major instrument in the commonwealth's peasant or jíbaro music.

(pronounced quatro) a ten-stringed lute instrument used in Puerto Rican plena music.

A Puerto Rican stringed instrument (similar to the Cuban tres), derived from the guitar.

A small ten-stringed guitar, one of the many guitar variants to be found in Spain and Latin America. The cuatro is a major instrument in Puerto Rican jibaro country music.

Guitar-like fretted lead instrument of Puerto Rico with four double courses of strings.

small Puerto Rican guitar with five double-stringed courses

The cuatro is any of several Latin American instruments of the guitar or lute family. The cuatro is smaller in size than a guitar. Cuatro means four in Spanish, although the current instruments may have more than four strings.