50 Fremont Center (also known as Salesforce West) is a 43-story high-rise office building completed in 1985 at Fremont and Mission Streets in San Francisco, California. It was acquired by Salesforce in 2015.

The project included a replacement of the entire control system with new controllers by Johnson Controls, Inc, based on the Facility Explorer Line (with a Niagara front end).

The building contains (6) Major Air Handling units on (2) mechanical floors and a central chilled water and boiler plant feeding variable volume air terminals with hot water reheat on tenant floors.