- Nicolo Amati
- Nicolo Tartaglia
- Nicol prism
- Nicolás Guillén
- Nicomachean Ethics
- Nicomachus
- Nicomachus theorem
- Nicomedes
- Nicomedes conchoid
- nicomelane
- Nico metal
- Nicosia
- Nicos Poulantzas
- nicosulfuron
- nicotinamide
- nicotinamide adenine dinucleotide
- nicotinamide adenine dinucleotide phosphate
- nicotinamide adenine dinucleotide phosphate-oxidase
- nicotine
- nicotine acetylcholine receptor
- nicotine cholinoceptor agonists
- nicotine replacement therapy
- nicotinic acetylcholine receptor
- nicotinic acid
- nicotinic acid nutrition