The Don Mills LRT was a proposed light rail line in Toronto, Ontario, Canada.

[3] The Don Mills LRT is still included in Metrolinx's regional transportation plan The Big Move under the 15-year horizon.

The LRT would operate via Don Mills Road from the north, and then turn east along Overlea Boulevard through the community of Thorncliffe Park.

It also proposes that the LRT stretch north past Steeles Avenue, along Leslie Street to Highway 7 in York Region.

The YRNS found that a subway between downtown and Sheppard Avenue would provide the most effective relief on the Yonge line.