Osman Ahmed (عثمان أحمد) was a Somali ruler. He was the fifth and final Sultan of the Geledi Sultanate. Osman Ahmed is considered less illustrious than his predecessors and Gobroon power weakened considerably under his rule. He was the son of Sultan Ahmed Yusuf and succeeded his father after his death. Although, considerably weaker than his forebears he was still the most powerful ruler in the region and was credited for defending the Rahanweyn territory by repulsing an invasion from the Ethiopian Empire and Dervish State.
The succession of Osman Ahmed in the 1880s brought the Geledi Sultanate a man of lesser desires and minimal diplomatic skills than his illustrious forefathers. Osman, for example, did nothing to stop the Bimaal when they blockaded a branch of the Shabelle River thus causing difficulties to Geledi's agricultural subjects downriver. During Osman's rule, numerous former allies and subjects began to claim their independence from Geledi he