The Thorpe Interchange is a large motorway free-flow intersection in Surrey, United Kingdom, connecting the M3 with the M25.

The section of the M3 that passes through the interchange (Bagshot A322 to Sunbury Cross A308, junctions 1–3) opened on 11 July 1974.

The section of the M25 to the south (Chertsey to Thorpe) began in July 1978 and opened on 9 October 1980.

The B389 (west) and B388 (east) pass east–west close to the north of the interchange.

The Chertsey Branch Line passes close to the south-west, between Virginia Water railway station (to the west), and Chertsey railway station (to the south-east).