Zagnanado or Zangnanado is a town, arrondissement, and commune in the Zou Department of southern-central Benin. It is located 47 kilometres from Abomey and 165 kilometres north of Cotonou. The commune covers an area of 750 square kilometres and as of 2013 had a population of 132,401 people.

Zou is one of the twelve departments of Benin, named for the Zou River which travels through the department before emptying into the Atlantic in the south of the country. The department of Zou was split in two in 1999, with the northern territory transferred to the newly created Collines Department. The capital of Zou is Abomey. Zou is subdivided into nine communes, each centred at one of the principal towns: Abomey, Agbangnizoun, Bohicon, Cové, Djidja, Ouinhi, Za-Kpota, Zangnanado and Zogbodomey.