Nicolai is a given name. Notable persons with that name include:
- Nicolai Belokosov (born 1975), Moldovan judoka
- Nicolai Borger[de], German writer, actor and director
- Nicolai Gedda (1925–2017), Swedish operatic tenor
- Nicolai Jørgensen (born 1991), Danish footballer
- Nicolai Kielstrup (born 1991), Danish singer
- Nicolai Lomov (1946–2020), Russian classical pianist
- Nicolai Tangen (born 1966), Norwegian hedge fund manager
See also
- All pages with titles beginning with Nicolai
- All pages with titles containing Nicolai
- Nicolai (disambiguation)
- Nicolai (surname)
- Nicolay (disambiguation)
- Nikolay (disambiguation)
- Nikolaj
- Nikolai (disambiguation)
- Niccolai
- Nickolai Stoilov
- Nicola (name)
- Nicolae (name)
- Nicolaj
- Nicolao
- Nicolas (given name)
- Nicolau
- Nicolau (surname)
- Nicolay