Jack Hayter is a British musician. He is best known as a multi instrumentalist with Hefner but is also an acclaimed folk singer-songwriter in his own right. Hayter also played with alt-country band Spongefinger and folktronica band Dollboy. Hayter is also frequently used as a session pedal steel guitar player in the London alternative scene.

Hefner were a British indie rock band formed in east London in 1995. They were active from about 1996 until 2002; since then they have played together only once, for a tribute to the DJ John Peel, who was a strong supporter of theirs.