Paul Northfield is a prolific British record producer and sound engineer, who has worked on albums by bands such as Dream Theater, Queensrÿche, Rush, Porcupine Tree and Suicidal Tendencies. Northfield worked at Advision Studio, London from 1974 to 1978, then at Le Studio, Morin Heights, Quebec from 1978 to 1987, and has been an independent engineer since then.