Gaucelm (died 834) was a Frankish count and leading magnate in Gothia during the reign of Louis the Pious.
He was initially the Count of Roussillon from about 800, but he received Empúries in 817 and was thenceforward the chief representative of imperial authority in that region.
In another assembly at Aachen in February 832, the whole region was assigned to Charles the Bald, while Gaucelm and Bernard were deposed later that same year.
Finally, in 833, after mediation with Ansegisus, Abbot of Fontanelle, he resigned and retired with Sanila to some familial properties in Burgundy.
Gaucelm and Sanila were killed in the battle of Chalon-sur-Saône the next year, while fighting for Louis the Pious against his son Lothair.