Čapljina is a town and municipality in Bosnia and Herzegovina. It is located in the Herzegovina-Neretva Canton of the Federation of Bosnia and Herzegovina. Located on the border with Croatia a mere 20 kilometres (12 mi) from the Adriatic Sea, the town's landmark is a statue of King Tomislav. The Church of Saint Francis of Assisi is also a prominent facet of the town. The municipal coat of arms contains the Croatian chequy, the nearby tower in Počitelj, and Saint Francis of Assisi.

The municipality has a rich archaeological history and untouched wilderness and is starting to develop agricultural tourism. It is also home to Hutovo Blato Park, which contains one of the most diverse bird populations in all Europe. The Croatian town of Metković is located just over the border and there are significant commercial and other links between the two towns new Čapljina International Speedway.