The story
Founded by Peter Donahue in 1849.1
Private company
San Francisco American shipyard company
Union Iron Works, located in San Francisco, California, on the southeast waterfront, was a central business within the large industrial zone of Potrero Point, for four decades at the end of the nineteenth and beginning of the twentieth centuries.2 It was founded by Peter Donahue.1 Wikipedia text CC BY-SA 4.0
Last updated Oct 20, 2026.
See how the biggest companies compare on our leaderboards

Union Iron Works, located in San Francisco, California, on the southeast waterfront, was a central business within the large industrial zone of Potrero Point, for four decades at the end of the nineteenth and beginning of the twentieth centuries.2
Founded by Peter Donahue in 1849.1
Who has led Union Iron Works, and when. Pick a name to see everywhere that person has worked.
The numbers on this page point here. Each one links to the record it came from.