| Country: | Bosnia and Herzegovina |
| Colorcode: |
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| Croatian Christian Democratic Union of Bosnia and Herzegovina | |
| Native Name: | Hrvatska kršćanska demokratska unija Bosne i Hercegovine |
| Abbreviation: | HKDU BiH |
| President: | Ivanka Barić |
| Foundation: | 26 September 2009 |
| Headquarters: | Mostar, Bosnia and Herzegovina |
| Ideology: | Christian democracy National conservatism |
| National: | Croatian National Assembly |
| Seats1 Title: | HoR BiH |
| Seats2 Title: | HoP BiH |
| Seats3 Title: | HoR FBiH |
| Seats4 Title: | HoP FBiH |
| Colours: | Dark blue, Red |
The Croatian Christian Democratic Union of Bosnia and Herzegovina (Croatian: Hrvatska kršćanska demokratska unija Bosne i Hercegovine, HKDU BiH) is a minor Croatian political party in Bosnia and Herzegovina.