Mark DeSaulnier

Mark DeSaulnier
Official portrait, 2015
Ranking Member of the House Ethics Committee
Assumed office
January 3, 2025
Preceded bySusan Wild
Member of the U.S. House of Representatives
from California
Assumed office
January 3, 2015
Preceded byGeorge Miller
Constituency11th district (2015–2023)
10th district (2023–present)
Member of the California State Senate
from the 7th district
In office
December 1, 2008 – January 2, 2015
Preceded byTom Torlakson
Succeeded bySteve Glazer
Member of the California State Assembly
from the 11th district
In office
December 4, 2006 – November 30, 2008
Preceded byJoe Canciamilla
Succeeded byTom Torlakson
Member of the Contra Costa County Board of Supervisors
from the 4th district
In office
January 29, 1994 – December 4, 2006
Preceded bySunne McPeak
Succeeded bySusan Bonilla
Personal details
BornMark James DeSaulnier
(1952-03-31) March 31, 1952
PartyRepublican (before 2000)
Democratic (2000–present)
Spouse
Melinda Clune
(divorced)
Children2
RelativesEdward DeSaulnier (father)
EducationCollege of the Holy Cross (BA)
Signature
WebsiteHouse website
Campaign website

Mark James DeSaulnier (/dəˈsni/ də-SOH-nee-ay; born March 31, 1952) is an American politician who has served as a U.S. representative from California since 2015. He has represented the 10th congressional district since 2023, although it was previously numbered the 11th district for his first eight years in office. The district includes most of Contra Costa County, a suburban county in the East Bay. Until 2000, he was a member of the Republican Party; he has since been a member of the Democratic Party.

Before serving in the House of Representatives, DeSaulnier was a member of the Concord City Council (1991–94), a Contra Costa County Supervisor (1994–2006), and a member of the California State Legislature, representing the 11th State Assembly district from 2006 to 2008 and the 7th State Senate district from 2008 to 2015.