The Scottish Open Championship is a Motorcycle speedway championship held annually in Scotland. The Championship has been run almost every year since 1928. That inaugural year saw two events, one for 350 cc bikes and another for 500 cc bikes. From 1929 the event was only open to those riding the 500 cc bikes. Run as the Scottish Championship from 1928-1945, it became the Scottish Riders Championship from 1949-1954 before a third and final name change in 1960 to the Scottish Open Championship.