Names like Niki include alternative spellings such as Nikki, Nicky and Nicki, longer forms like Nicole, Nicholas and Nicola, short forms like Cole, Klas and Nilo, and cross-language cognates including Mikolaj, Nikolaos and Nicolae.

Overall

1. Nicholas (Nicolas, Nikolas, Nickolas)
2. Ricky (Ricki, Rickie, Ricki, Rikki, Rikki, Rickey)
3. Nicola (Nikola, Nikola)
4. Mikolaj
5. Colin (Kolin)
6. Mickey (Micky, Mikki, Miki, Mickie, Mickie, Mikki, Mykie, Miki, Micki)
7. Nikhil (Nicol)
8. Nikolaos
9. Nicolae
10. Vicki (Vickie, Vicky)

Longer forms

• Nicole
• Nicholas, Nicolas, Nikolas, Nickolas
• Nicola, Nikola
• Colin, Kolin
• Nikolai
• Nichole
• Nicolo
• Niklas
• Nikos
• Nixon, Nickson
• Nicci
• Niklaus
• Niccolo
• Niels
• Nikolaus
• Nicolette
• Klaus, Clouse
• Miklos
• Nicholai
• Nico, Niko, Neco, Neeko, Nikko
• Nicoletta
• Nikolia

Short forms

• Cole, Kole, Kohl, Colle, Coale, Cohl
• Nikki, Nicky, Niki, Nicki
• Klas
• Nilo

Related short forms

• Nick, Nik, Knick
• Nic

Cognates

Names with the same meaning but not necessarily in the same language or format

• Mikolaj
• Nikolaos
• Nicolae

Rhyming names

• Ricky, Ricki, Rickie, Rikki, Rickey
• Vicki, Vickie, Vicky
• Mickey, Micky, Mikki, Miki, Mickie, Mykie, Micki

Alliterative names

Names that start with similar sounds to niki

• Nikhil, Nicol
• Nimra, Nimrah
• Nyla
• Nisha
• Neriah
• Nils
• Neeraj

Other names that contain similar sounds

• Nikita, Nikkita
• Necati

Names with similar tags

Tags include origins, well known people etc

• James
• Jory
• Ange
• Emmett
• Marlow
• Pippin
• Christen
• Nova
• Ada
• Samuela

Names with similar locations

Compares geographical origins and national popularity

• Roman
• Veronica
• Hector
• Otis
• Zoya
• Sylvia
• Iris
• Melody
• Lia
• Ricky

Names popular in similar years

Looks for trends from data about name popularity across the decades

• Michael
• Daniel
• Aaron
• Thomas
• Rebecca
• Charles
• William
• Samuel
• Edward
• Amy