NKU primarily refers to Northern Kentucky University, a public university located in Highland Heights, Kentucky, in the United States. It can also refer to the school's intercollegiate athletic program, the Northern Kentucky Norse.

Internationally, "NKU" may also refer to:

• Supreme Control Office of the Czech Republic, or "Nejvyšší kontrolní úřad" ("NKÚ")
• Nkaus Airport, an airport in Lesotho with International Air Transport Association airport code "NKU"
• The Young Communist League of Norway, Norges Kommunistiske Ungdomsforbund
• Nku, name used by the South African business executive Nonkululeko Nyembezi-Heita

• Ibrahim Yilmaz
• Ibrahim Younisi
• Ibrahim Youssef Al Doy
• Ibrahim Yusri
• Ibrahim Zaarur
• Ibrahimzai
• Ibrahim Zaid al-Kilani
• Ibrahimzai railway station
• Ibrahim Zayd al-Kaylani
• Ibrahim Zeid al-Keilani
• Ibrahim Zeid Kailani
• Ibrahim Zeid Kaylani
• Ibrahim Zeid Keilani
• Ibrahim Zeid Kilani
• Ibrahim Zengin
• Ibrahim Şinasi
• Ibrahim ‘Abd al-Majid
• Ibrah River
• Ibrahïm Mäkhüs
• I. B. Rai Dharmawijaya Mantra
• Ib (railway station)
• Ibraima Balde
• Ibraima So
• Ibraimi
• Ibrain Camejo