Leibulf, Leybulf, or Letibulf was the Count of Provence in the early ninth century.
[1] Leibulf's origins are unknown, though the probability is high that he was a native of Provence where he held ex rebus proprietas (allodial land) in Arles.
His rise to power occurred in the last years of the reign of Charlemagne (768 – 814), who may have granted him many of the honores he held.
Along with Bera's Goths and Duke Sancho I's Gascons, he led a contingent of Provençals on Louis the Pious' expedition against Barcelona in 801 – 802.
He died in 829 (after 16 March, date of his last donation to Lérins) and Bernard of Septimania was given his honores.