425 Market Street is an office skyscraper located on the corner of Market and Fremont Streets in the financial district of San Francisco, California.

It was built as a modern replacement for their older headquarters on Nob Hill at 600 Stockton Street (now remodeled as the Ritz-Carlton Hotel).

It was among the first buildings in San Francisco to have a high-speed transport system (a glorified dumb waiter) for computer data cards, files and inner-office mail, at the time a state-of-the-art system.

[citation needed] Its largest tenant today[when?]

is law firm Morrison & Foerster LLP.