The East Bay is a commonly used, informal term for the lands on the eastern side of the San Francisco Bay, in the San Francisco Bay Area, in California, United States. Originally referring only to cities along the immediate northeast shore of the San Francisco Bay and the southeast shore of San Pablo Bay, the region described as the "East Bay" has grown with the expansion of the Bay Area's population and infrastructure to include all of Alameda and Contra Costa counties, and even some farther outlying cities.

Източният залив (на английски: East Bay) е подрайон в района на залива на Сан Франциско, щата Калифорния, САЩ. Оукланд е най-големият град в Източния залив.