Old Ironside (Czech: Železný dědek) is a 1948 Czech comedy drama film directed by Václav Kubásek and starring Jaroslav Marvan, Marie Ježková and Otomar Krejča.

The film's sets were designed by the art director Alois Mecera.

During the final weeks of the Second World War, experienced engine driver tries to protect his beloved locomotive from an attack by dive bombers, but is injured and the engine is damaged.

He is facing retirement but alarmed that his old engine is to be scrapped, he leads some apprentices to help restore her.

He then helps to avert a dangerous accident on the railway and is invited back to work.