The Epping to Chatswood rail link (ECRL) (originally a part of the Parramatta Rail Link (PRL) proposal) was a railway line in the northern suburbs of Sydney, Australia, which connected Epping station on the Northern line with Chatswood on the North Shore line. The 13 km line ran completely underground and included three new intermediate stations: Macquarie University, Macquarie Park and North Ryde. The junction stations at Epping and Chatswood both underwent major redevelopments to incorporate the new link.