- NY
- Nyala
- Nyamuragira
- Nyamwezi
- Nyasaland
- nybble
- Nyctaginaceae
- Nyctaginia
- Nyctaginia capitata
- nyctalopia
- Nyctanassa
- Nyctanassa violacea
- Nyctereutes
- Nyctereutes procyonides
- Nycticebus
- Nycticebus pygmaeus
- Nycticebus tardigradua
- Nycticorax
- Nycticorax nycticorax
- Nyctimene
- nyctophobia
- nycturia
- Nydrazid
- Nyiragongo
- nylghai
- nylghau
- nylon
- nylon stocking
- nylons
- nymph
- Nymphaea
- Nymphaea alba
- Nymphaea caerulea
- Nymphaea lotus
- Nymphaea odorata
- Nymphaea stellata
- Nymphaeaceae
- nymphalid
- nymphalid butterfly
- Nymphalidae
- Nymphalis
- Nymphalis antiopa
- nymphet
- Nymphicus
- Nymphicus hollandicus
- nympho
- nympholepsy
- nympholept
- nymphomania
- nymphomaniac
- nymphomaniacal
- Nynorsk
- Nypa
- Nyquist frequency
- Nyquist rate
- NYSE
- Nyssa
- Nyssa aquatica
- Nyssa sylvatica
- Nyssaceae
- nystagmus
- Nystan
- nystatin
- Nyx