NSZ can refer to:

• Nanking Safety Zone, a demilitarized area in Nanking, China in 1937-1938
• Narodowe Siły Zbrojne (National Armed Forces), World War II resistance movement in Poland

• Al-Madlaʽah
• Al Mado
• Al Madow
• Al Madrigal
• Al-Madudah
• Al madudah
• Alma Duncan
• Almadén de la Plata, Sevilla
• Almadén de la Plata, Seville
• Almadén de la Plata, Spain
• Almadén Vineyards
• Al Madīnah
• Al Madīnah Emirate
• Al Madīnah Province
• Almae matres
• Almaet
• Alma (film)
• Al Mafjar
• Al Maflahy District
• Al-Mafraq
• Al Mafraq Governorate
• Almafuerte, Misiones
• Alma Garcia
• Almagate
• Almagellerhorn