Mike Dirnt (born Ryan Pritchard on May 4, 1960 or 1963, in Berkeley, California) is the bass guitar player from the punk rock band Green Day, he also sings back up vocals.

Dirnt was adopted. His adoptive parents divorced when he was 7, and both are now remarried. Dirnt owns a restaurant in California called "Rudy's Can't Fail Cafe". He married his long time girlfriend Anastasia in 1996 and their daughter, Estella-Desiree, "Stella", was born in April 1997. He recently was remarried in 2004, however his wife left him because he spent too much time in the studio recording American Idiot. ^[source?] Dirnt lives in Oakland, California.

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