Mark Leno is an American politician, representing the 13th Assembly district of California, consisting of the eastern portion of San Francisco. Leno is the Chair of the Assembly's Public Safety Committee, as well as the Select Committees on Lesbian, Gay, Bisexual & Transgender (LBGT) Families and Childhood Obesity & Related Diabetes. Leno was elected to the Assembly in 2002; from 1998 to 2002 Leno served as a member of the San Francisco Board of Supervisors.