Shannon Leto is an American musician and songwriter. He is the drummer of the band Thirty Seconds to Mars, for which his brother, actor Jared Leto, is a vocalist, multi-instrumentalist, and songwriter.

Ethnically, Leto is mostly English and Cajun/French. Smaller amounts of his ancestry are Irish, German, Scottish, at least 1/512 Spanish, remote Dutch, and Mi’kmaq First Nations

• Ethnicelebs: Shannon Leto