Joshua Paul Groban (born August 15, 1973) is an American lawyer who serves as an associate justice of the California Supreme Court.

[4] His father is a physician at University of California, San Diego hospital, and his mother, Deborah Isackson Groban, served as a member of Del Mar City Council.

[6] He was in private practice at Paul, Weiss, Rifkind, Wharton & Garrison in New York City from 1999 to 2005, and at Munger, Tolles & Olson in Los Angeles from 2005 to 2010.

[5] On November 14, 2018, Groban was appointed by Governor Jerry Brown to serve as an associate justice of the California Supreme Court.

[11] As of November 11, 2022[update], following the 2022 election, he was retained by California voters to continue to serve as an associate justice with 68.4% of an affirmative vote.