Nag

Nag may refer to:

New Age Gaming, a gaming magazine in South Africa
New American Gospel, debut album by heavy metal band Lamb of God
N-Acetylglucosamine, a biological molecule
Nag Missile, a third generation "fire and forget" anti-tank missile
Nag, a small horse; an old female horse; a pony
Numerical Algorithms Group, a non-profit software company
Nag, a male cobra in Rudyard Kipling's Rikki-Tikki-Tavi
Nag, a multi user tasklist manager included in Horde (software)
Nag (surname)- A Konkani surname
NAG, The National Association of Goldsmiths, British Trade Association for Quality Retail Jewellers
Neighbourhood action group (NAG)

NAG = Non Agglutinable Germs ( non cholera vibrios or other vibrios ) bacteria( vibrios) responsibles for sporadic diarrhea and are pioneer for cholera outbreak