The North Liverpool Extension Line is a now-disused railway line in Liverpool, England. It was built by the Cheshire Lines Committee, branching from the Committee's Liverpool to Manchester line at Hunts Cross and skirting the edge of Liverpool before finally arriving at the Walton Triangle, a junction where one line continued north to Aintree and another turned west towards the River Mersey. It opened between 1879 and 1880. The Aintree branch was extended to Southport in 1884.
The route closed in stages. In 1960 the line closed to passengers between Aintree and Gateacre. In 1972 passenger trains to Gateacre were withdrawn. Freight trains, however, continued to use the line until 1979. The line has not been used since, and the trackbed now forms part of National Cycle Network Route 62, the Trans Pennine Trail.
