Saens can refer to:

• Camille Saint-Saëns (1835–1921), the French Romantic composer
• Sidonius of Saint-Saëns (7th century A.D.), the Irish-born French monk and Roman Catholic Church saint

• Nummer 17
• Numminen
• Nummisuutarit
• Nummo
• Nummular eczema
• Nummular epidermolytic palmoplantar keratoderma
• Nummular epidermolytic PPK
• Nummular neurodermatitis
• Nummular psoriasis
• Nummulitic
• Nummulus
• Nummus
• Num, Nepal
• Numogate, Ontario
• Numondzhon Khakimov
• Numonia
• Numonius Vala
• Numonjon Hakimov
• Numpad
• Numskulls
• NUM strike of 1984 to 1985
• Numu
• Numular dermatitis
• Numular eczema
• Numunuu