Eryn Cayetano (born April 13, 2001) is an American professional tennis player. She has career-high rankings of No. 396 in singles, achieved on August 11, 2025, and of No. 312 in doubles, achieved on August 11, 2025. She played collegiate tennis at the University of Southern California.
Cayetano grew up in Long Beach and Corona, California. Her father, Ed, was born and raised in Cebu, Philippines. She attended St. Anthony High School.
Cayetano played collegiate tennis for the USC Trojans. In 2022, she joined the USTA Collegiate Summer Team and was nominated for the Honda Sports Award.