Sélibaby (Arabic: سليبابي) is a capital town and department of the Guidimaka Region, in Mauritania.

It is divided into a number of "quartiers" which include "College", "Silo", 'Ferlo", "Nezaha", "Saada", "El Jedidah", "Bambaradougou" amongst many others.

[citation needed] Selibaby is also a center for NGOs who operate in the region.

Sélibaby has a hot semi-arid climate (Köppen BSh).

The city is among the wettest in the country due to its significant exposure to the West African Monsoon, with about 452 mm (17.80 in) of precipitation falling annually.