List of companies based in the San Francisco Bay Area
This is a list of current and former companies based in the San Francisco Bay Area, broken down by type of business. Fortune 500 rankings are indicated in parentheses. As of 2020, 38 Fortune 500 companies had headquarters in the San Francisco Bay Area. San Francisco-based businesses are not listed here; the subset of San Francisco-based businesses by type is at the list of companies based in San Francisco. This list includes extant businesses formerly located in the Bay Area, which have moved, or been bought out by  other companies and had their headquarters relocated. With the booming tech industry in San Francisco, businesses face a lot of pressure to keep up with the surge of new companies. Companies currently based in the San Francisco Bay Area. Food and drink. Food and drink establishments with one location are not included in this list. Local and regional establishments with more than one location are included. Companies formerly based in the San Francisco Bay Area. This list contains both extant companies which have moved their headquarters out of the Bay Area (often during a corporate buyout), and defunct companies. List