The International Railway Journal (IRJ) is a monthly international trade magazine published by Simmons-Boardman Publishing in Falmouth, England.

Founded by Robert Lewis and Railway Age editor Luther Miller as the world's first globally distributed magazine for the railway industry, the first edition of IRJ was published as a pilot in October 1960. Monthly production commenced in January 1961.

The magazine covers a range of rail-related content, covering sectors including passenger, freight, high-speed, metro and light rail. Regular subject matters include financial news, fleet orders, infrastructure, new technologies and government policy.

IRJ publishes regular content on its website, and also publishes a monthly print edition, distributed through controlled circulation. IRJ's print edition had a circulation of 10,234 copies in 2020, according to the Audit Bureau of Circulations (UK).