Electro Master was an American electric vehicle brand that operated from 1962 to 1970. It was a product of Nepa Manufacturing Company, which was based in Pasadena, California. The brand emerged during a period of increased interest in electric cars in the United States, reflecting a growing awareness of alternative energy sources.

The Electro Master was designed primarily as a shopping car, featuring a lightweight fiberglass body. It was powered by a modest 2-horsepower electric motor, which drew energy from six 6-volt batteries. This configuration allowed the vehicle to achieve a top speed of 20 miles per hour (32 kilometers per hour) and provided a total driving range of approximately 40 miles (64 kilometers).

Despite its limited performance and range, the Electro Master represented an early attempt to popularize electric vehicles in a market that was beginning to explore alternatives to traditional gasoline-powered cars. The brand's production ceased in 1970, marking the end of its brief presence in the automotive landscape.