Hawaii Low Cost Spay/Neuter Locations:

Island of Hawaii:
Spay & Neuter Information - Hawaii Island Humane Society
Rainbow Friends Animal Sanctuary – Non-Profit Organization
Free Cat Spay/Neuter Clinic in Hilo | Big Island Now 
Hui Pono Holoholona 
AdvoCATS Hawaii 
Kona (Hawaii Island Humane Society) Kailua Kona HI

Island of Kauai:
Kauai Humane Society

Island of Maui:
Maui Humane Society 
Wailuku Pet Clinic
At Home Animal Hospital

Island of O’ahu:
Hawaiian Humane Society. Honolulu, HI