- Katlin
- Katlyn
- Katlyne
- Katlynn
- Katreen
- Katrena
- Katrice
- Katriel
- Katrin
- Katrina
- Katrine
- Katrinelle
- Katryna
- Katsu
- Katsuko
- Katsutoshi
- Kattie
- Katty
- Katy
- Katya
- Kaufman
- Kaulana
- Kavan
- Kavanagh
- Kaveh
- Kaven
- Kaveri
- Kavi
- Kavin
- Kavindra
- Kavita
- Kavon
- Kawena
- Kawika
- Kay
- Kaya
- Kayanna
- Kayce
- Kaycee
- Kayci
- Kaycie
- Kaydee
- Kayden
- Kaydence
- Kayin
- Kayla
- Kaylah
- Kaylan
- Kaylani
- Kayle