Tri-ang Railways was a British manufacturer of toy trains, one of the elements of the Lines Bros Ltd company who traded using the brands Tri-ang, Minic, Pedigree, and Frog. The Tri-ang Railways name was dropped a few years after Lines Bros took over the Hornby name although the majority of the trains were still the original Tri-ang models.

Lines Bros Ltd was a British toy manufacturer of the 20th century, operating under the Tri-ang Toys brand name.