Nikolai Koslow
Nikolai Koslow is the name of the following people:
- Nikolai Koslow (biathlete) (born 1983), Russian biathlete
- Nikolai Illarionowitsch Koslow (1814–1889), Russian military doctor
- Nikolai Ionowitsch Koslow (1928–2007), Soviet cross-country skier
- Nikolai Ivanovich Koslow (* 1957), Russian psychologist and writer
