Clarence Leonidas Fender (August 10, 1909 – March 21, 1991) also known as Leo Fender, was an American instrument maker.

He founded a company called Fender Electric Instrument Manufacturing Company. It makes electric guitars, electric bass guitars, and electric guitar amplifiers. Leo Fender designed electric guitars which he called the Telecaster and the Stratocaster. Fender also designed the first bass guitar, which he called the Precision Bass. In the 1960s, Fender designed another bass guitar, which he called the Jazz Bass.