The Outer Metropolitan Ring Road is a proposed freeway (with space in the median for 4 railway tracks) in Melbourne, Australia connecting the Hume Freeway at Kalkallo north of Melbourne, to the Princes Freeway south-west of Werribee. The concept was announced as part of the Victorian Transport Plan of November 2008, planning having started in late 2007 but not widely publicised until February 2008.
The Outer Metropolitan Ring (OMR) planning study has been established by VicRoads to investigate transport requirements and options for the Werribee - Melton - Tullamarine - Mickleham corridor. The proposed route was released to the public in June 2009 for public comment, with construction not expected to start until 2020. This concept also added a link from Donnybrook to the Metropolitan Ring Road in Thomastown, and from the Deer Park Bypass to the Outer Metropolitan Ring. A study area around Bulla was also identified for a link to Melbourne Airport.