John Alexander Brodie (1858–1934) was a British civil engineer.
John Brodie was Liverpool’s City Engineer from 1898 until retirement in 1926. He was a pioneer in the field of town planning, and one of his legacies in the city is the network of wide avenues in the outer suburbs. These were conceived from the outset as part of a system of public transport using fast tramways on their own right of way down the central reservation. Unfortunately no equivalent roads were able to be built to accommodate the trams for the 3 to 4 miles between the City centre and the inner ends of these avenues, with the inevitable result that they succumbed to the increasing volumes of motor traffic on often relatively narrow main roads.