Not much is known about this city but it was founded by Romans in 5 BC. However, ancient Greek, and later Roman maps clearly show that the area was populated by several native Illyrian peoples, including the Ardiaei, whom the ancient geographer Strabo lists as one of the three strongest Illyrian peoples – the other two being the Autariatae and the Dardani. Čapljina is situated in the wider Neretva valley region, and its name derives from čaplja which means 'heron'. The Latin word for heron is ardea, a word that bears striking similarity with the name of Ardiaei, and it might possibly be its cognate. This theory opens up many possibilities for the interpretation of the original homeland of the Ardiaei and the etymology of their name. For example, heron might have had totemic pagan value among local Illyrians, due to its presence in this area, and it is not implausible to conclude that one of those Illyrian peoples named itself after a heron, the Ardiaei. The Latin word ardea might be a Latin translation of some original Illyrian word for 'heron' that Romans found when they settled in this area, or the 'ardea' itself, could have been an Illyrian word taken by Romans, who might have slightly altered it and integrated it into their language, the Latin. Indeed, the wordArdiaei is found in ancient Greek sources predating the arrival of Romans and their language to the Illyrian lands. It is also possible that ancient Illyrians or Romans named this place 'the place of heron, and the Slavic settlers, who settled in the former Illyrian lands around 6th century A.D. translated the name of this place into their language, which in turn gave 'Čapljina', "the place of heron". The Prebilovci massacre, in which around 4,000 people were killed total, including 300 villagers from the Prebilovci thrown into a pit, is one of the most significant atrocities in this area during the Genocide of Serbs in the Independent State of Croatia. Out of about 700 villagers from Prebilovci, fewer than 200 survived. As a revenge, In 1942, the Serbian royalist Chetniks attacked several villages in the Čapljina area. The village of Hotanj was burned, and many Croat and Bosniak civilians were killed. The massacres were a part of the Chetnik genocidal campaign against non-Serbs. Since World War II it has been an important road and rail transportation link, connecting the rest of Bosnia and Herzegovina with the port of Ploče in Croatia. During the 1992–1995 war in Bosnia and Herzegovina the city was taken over by the Croatian Defence Council, which expelled the non-Croat population and set up concentration camps for Bosniaks at Gabela camp. During the summer of 2007 wildfires caused extensive damage throughout the rural part of the municipality. The officials of Čapljina, Stolac, Čitluk and Neum declared the state of natural disaster on their territories. In May of 2019, the former Municipality of Čapljina got the status of an 'official city'.
Settlements
Demographics
Population
Ethnic composition
Culture
In the Čapljina area, cultural associations include the following:
HKUD Čapljina
HKUD Sveti Ante
HKUD Seljačka Sloga
HKUD "Zora" Struge-Gorica
Famous People
Slobodan Praljak, Croatian general, politician and writer
Admir Salihović, Bosnian footballer
Nikica Jelavić, Croatian footballer
Ivo Prskalo, retired Yugoslav and Australian footballer
Dada Vujasinović, Serbian journalist and news reporter
Jasmin Repeša, Croatian basketball coach
Pamela Ramljak, Croatian singer
Marko Vego, Yugoslav archeologist, epigrapher and historian