Dassa-Zoumé [da.sa.zu.me], also known as Igbó Ìdàáshà or simply Dassa, is a city in central Benin, on the Cotonou-to-Parakou railway and the main north-south highway.
Dassa I is an arrondissement in the Collines department of Benin. It is an administrative division under the jurisdiction of the commune of Igbo Idaasha.
The Kingdom of Dassa was founded around 1600. Around 1800, Dahomey won it in a conquest. In 1889, it became independent of Dahomey, but was placed under a French protectorate.