- numerator (of a fraction)
- numerical
- numerical analysis
- numerical quantity
- numerical value
- numerically
- numerousness
- numerosity
- numerous
- numida meleagris
- numinous
- numismatologist
- numidia
- nummulitidae
- nun
- nun buoy
- nun's habit
- nunc dimittis
- nunavut
- nuncupate
- nung
- noblewoman
- neuroglia
- news magazine
- newmarket
- Norwegian monetary unit
- Nepalese monetary unit
- Nigerian monetary unit
- Nicaraguan monetary unit
- North Korean monetary unit
- nitride
- nonvolatile storage
- niccolo machiavelli
- NMR
- Nelumbonaceae
- Nymphaeaceae
- Nelumbo
- nettle family
- Nyssaceae
- Nepenthaceae
- Nyssa
- Nopalea
- Nepenthes
- Nephelium
- Nerium
- Nemean lion
- never_never land
- norn
- normative
- neuropteron