J-K-L
- J. Williams (Joshua Williams) - singer, dancer
- Jakob
- Jamoa Jam
- Jean-Paul Sartre Experience
- Greg Johnson
- Katchafire
- Kimbra
- King Kapisi
- The Knobz
- Christy Knox - singer, songwriter
- Kora
- Shona Laing
- Mark Laurent
- Derek Lind
- Douglas Lilburn - composer, educator
- Look Blue Go Purple
- Courtney Love - singer, actress (born in San Francisco, California, U.S., but spent the childhood on a sheep farm in Nelson, where went to a boarding school)
- Eddie Low
- Jordan Luck
- Ben Lummis
Read more about this topic: List Of New Zealand Musicians