Seymour Duncan is an American company best known for manufacturing guitar and bass pickups. They also manufacture effects pedals which are designed and assembled in United States. Guitarist and luthier Seymour W. Duncan and Cathy Carter Duncan founded the company in 1976, in Santa Barbara, California.

A pickup is a transducer that captures or senses mechanical vibrations produced by musical instruments, particularly stringed instruments such as the electric guitar, and converts these to an electrical signal that is amplified using an instrument amplifier to produce musical sounds through a loudspeaker in a speaker enclosure. The signal from a pickup can also be recorded directly.