Peter Yarrow (born May 31, 1938) is an American singer. He is known for his songs such as "Puff, the Magic Dragon", "Lemon Tree", and "I'm In Love with a Big Blue Frog". He is also a political activist and supported veterans' rights.

Yarrow was born on May 31, 1938 in New York City, New York to a Ukrainian-Jewish family. He studied at High School of Music and Art and at Cornell University. Yarrow is married to Mary Beth McCarthy (niece of Eugene McCarthy). They have two children.