The East Bay, in the northern part of the U.S. state of California, lies on the east shores of the San Francisco Bay and San Pablo Bay, and includes Alameda and Contra Costa Counties.

Interstates 80, 580, 680, and 880 are the main highways of the East Bay.

East Bay cities include: Fremont, Newark, Union City, Hayward, San Leandro, Oakland, Berkeley, Richmond, Martinez, and Walnut Creek (along with many others).