Bill Ruppert (born June 10, 1954) is an American musician, known as one of the most prolific and widely heard studio guitarists, logging nearly 10,000 sessions in a career spanning over 30 years.

He recorded guitar with Bryan Ferry of Roxy Music, Phil Collins of Genesis, Chuck Mangione and Richie Havens.

In conjunction with Electro-Harmonix, he has created a series of Effectology videos[2] using effects pedals to imitate different instruments, recreate classic songs, and mimic real-life sounds.

Ruppert won a Clio Award in 1989 for his advertising music production role in the Durasoft Color Contacts commercial "Parachute" for Young & Rubicam, Chicago.

In 2009, Ruppert began creating a video series called Effectology, in which he recreated extraordinary sounds with a regular electric guitar and Electro-Harmonix gear.