Tidaholm is a locality and the seat of Tidaholm Municipality in Västra Götaland County, Sweden, with 8,027 inhabitants in 2010.
Early Tidaholm was primarily agricultural. An ironworks factory was established in 1799 at the site of the Holmagarden forge. The ironworks were replaced in 1868 by a match factory. The Vulcan match factory eventually became the largest in the world. Today, the Lithographic Art Workshop in Tidaholm is in the former factory and carries on Tidaholm's tradition of the lithographic arts that began with designers of matchbox labels.
Tidaholm was detached from Baltak parish as a merchant town (köping) in 1895 and was made a city in 1910. It has been the seat of the much larger Tidaholm Municipality since 1974. Tidaholm is, despite its small population, for historical reasons normally still referred to as a city. Statistics Sweden, however, only counts localities with more than 10,000 inhabitants as cities.
In the centre of the town there is a hologram exhibition.