The 14 regions of Senegal are subdivided into 46 departments and 103^{[dubious – discuss]} arrondissements (neither of which have administrative function) and by collectivités locales (the 14 régions, 110 communes, and 320 communautés rurales) which elect administrative officers.^[1]

Since three new regions increased the number of departments to 45 in 2008, the most recent addition, of Keur Massar, in May 2008 brings the number to 46.^[2]

The departments are listed below, by region:

• Dakar Department
• Guédiawaye Department
• Keur Massar Department (since May 2021)^[3]
• Pikine Department
• Rufisque Department

• Bambey Department
• Diourbel Department
• Mbacké Department

• Fatick Department
• Foundiougne Department
• Gossas Department

• Kaffrine Department
• Birkilane Department
• Koungheul Department
• Malem Hoddar Department

• Guinguinéo Department
• Kaolack Department
• Nioro du Rip Department

• Kédougou Department
• Salémata Department
• Saraya Department

• Kolda Department
• Médina Yoro Foulah Department
• Vélingara Department

• Kébémer Department
• Linguère Department
• Louga Department

• Kanel Department
• Matam Department
• Ranérou Ferlo Department

• Dagana Department
• Podor Department
• Saint-Louis Department

• Bounkiling Department
• Goudomp Department
• Sédhiou Department

• Bakel Department
• Goudiry Department
• Koumpentoum Department
• Tambacounda Department

• M'bour Department
• Thiès Department
• Tivaouane Department

• Bignona Department
• Oussouye Department
• Ziguinchor Department

• Regions of Senegal
• Arrondissements of Senegal