Born in 1931 in a zaouîa in Gafsa in southern Tunisia,

Born in 1931 in a zaouîa in Gafsa in southern Tunisia, Brahim Dhahak was the eldest of seven children. Orphaned at 8, he enrolled in the Franco-Arabic school and later joined the technical high school in Sfax. His academic journey, where drawing always held a special place, led to expulsion due to his lack of interest in sciences. He moved to Tunis, worked as a waiter, then a headwaiter in various French families, all the while drawing and exhibiting with the Tunis School group.

Supported by the Italian Consul, he studied painting in Italy from 1958 to 1961 with a scholarship from the School of Fine Arts in Rome. 

During this period, he delved into painting (under Bartoli), mosaic, ceramics, and especially engraving with master engraver Macari. Returning to Tunis in 1961, he gained recognition with exhibitions in Tunis and Switzerland. In 1966, he settled in the village of Sidi Bou Said, dedicating himself entirely to art.

Dhahak continued to exhibit in Tunisia, Switzerland, and Germany, gaining considerable renown. His paintings depicted scenes of daily life, women, Tunisian landscapes, Sidi Bou Said, and he also engraved a bestiary populated by fish, birds, horses, and camels. He created mural mosaics for the Gafsa House of Culture and the port of La Goulette. Awarded the Grand Prize of the City of Tunis in 1991, he produced significant engraving works around folio-sized woodcuts. These were produced in his Sidi Bou Said workshop, including "The Hilalian Epic" in 1976, "The Birds of the Mediterranean," "The Camels," and "The Fish of Tunisia." He received the National Prize for Plastic Arts in 1994.