Cat Island may refer to:
Places
- Cat Island (Rodrigues), Mauritius
- Cat Island (Tasmania), Australia
- Tashirojima, Japan, also known as Cat Island due to a high population of cats
- Aoshima, Ehime, Japan, also known as Cat Island due to a high population of cats
North America
- Cat Island, Bahamas, Bahamas
- Cat Island (Massachusetts), United States
- Cat Island (Mississippi), United States
- Cat Island (South Carolina), one of the Sea Islands in Beaufort County, South Carolina, United States
- Cat Island (Wisconsin), United States
- Cat Island National Wildlife Refuge, Louisiana, United States
Novels
- Cat Island (novel), a 1981 science fiction novel by Walter Jon Williams
See also
- Cát Bà Island, Vietnam