Sophie Thornhill, (born 9 February 1996) is a vision impaired English racing cyclist who competes in para-cycling tandem track events.
She is a double world champion, with pilot Rachel James, and a double Commonwealth gold medallist, with pilot Helen Scott, in the tandem sprint and 1 km time trial events.
In April 2014, she set world records in the tandem sprint and 1 km time trial, piloted by James.