The Alexander Y Type was a long-running design of single-decker bus and single-decker intercity bus bodywork built by Walter Alexander Coachbuilders in Falkirk, Scotland.

A small number were built at Alexander's Belfast subsidiary.

The majority of Y Type bodies were fitted to Leyland Leopard chassis, and most were built for the Scottish Bus Group and its predecessors.

As can be seen from the table above, SBG was by far the biggest customer, buying over 86% of the total output of Y Types.

However other customers also existed, amongst these being the North Western Road Car Company with 75 Leopards and 30 Bristol REs, Venture of Consett with 32 Leopards and 12 Reliances, Lancaster City Council with 26 Leopards, and Potteries Motor Traction with 25 Reliances.