- Nick
- Nico
- Cole
- Nicky
- Niko
- Nic
- Nicks
- Nicky-Nick
- Nicho
- Nickster
- Nicki
- Nika
- Nix
- Niki
- Kolas
- Kol
- Kole
- Nikolai
- Kolya
- Klaus
- Nickles
- Nickman
- Nickie
- Nicky-boy
- Nicko
- Nicco
- Nicolai
- Nicolay
- Nicodemus
- Nicos
- Nikolas
- Nikos
- Nicklaus
- Nickolai
- Nickoli
- Nickolo
- Nickolus
- Nickson
- Nickykins
- Nicky-poo
- Nickykins
- Nickleson
- Nickels
- Nicker
- Nickerbocker
- Nicoli
- Nicolo
- Nicksen
- Nickylicious
- Nicksy
- Nickoletta
- Nickolita
- Nickylicious
- Nicka
- Nickalas
- Nicklas
- Nickolette
- Nickolena
- Nickalos
- Nickoliy
- Nickolis
- Nickolus
- Nickyjames
- Nicklous
- Nicklos
- Nickal
- Nickelle
- Nicksoni
- Nicketti
- Nicksu
- Nicksie
- Nickywin
- Nickz
- Nikolett
- Nikole
- Nikolle
- Nickiemon
- Nickmanus
- Nickmin
- Nickpat
- Nickpirate
- Nickpy
- Nickray
- Nickthor
- Nicktis
- Nicktoon
- Nicktroid
- Nicku
- Nickygo
- Nickypop
- Nickytech
- Nickytom
- Nickyturtle
- Nickyv
- Nickzor
- Niknak
- Nikoleta
- Nikora
- Nikus
- Nixie
