Charibert I (French: Caribert; Latin: Charibertus) was the Merovingian King of Paris, the second-eldest son of Chlothar I and Ingund. His elder brother was Gunthar, who died sometime before their father's death.
In 556, Chlothar sent Charibert and his next youngest brother Gunthram against their stepmother Chunna and their younger stepbrother Chram who was in revolt. Chramn was hiding out on Black Mountain in the Limousin. Negotiations failed and the two armies prepared for battle. A thunderstorm prevented any engagement and Chramn sent forged letters to his brothers, falsely reporting the death of their father. Charibert and Guntram immediately returned to Burgundy to secure their positions.
After the actual death of Chlothar in 561, the Frankish kingdom was divided between his sons in a new configuration. Each son ruled a distinct realm, which was not necessarily geographically coherent but could contain two unconnected regions, from a chief city after which his kingdom is called. Charibert received Neustria (the region between the Somme and the Loire), Aquitaine, and Novempopulana with Paris as his capital. His chief cities were Rouen, Tours, Poitiers, Limoges, Bordeaux, Toulouse, Cahors, and Albi. Guntram received Burgundy, then Sigebert received Austrasia (including Rheims) with his capital at Metz, and the youngest brother Chilperic received a compact kingdom with Soissons as its capital.