J. F. Duthie & Company was a small shipyard located on the east side of Harbor Island in Seattle, Washington.

It was reportedly organized in 1911 (although there is no mention of it on the 1912 Baist map[1] at the location where the shipyard would be built) and expanded to 4 slipways on 25 acres (10 ha) of property[2] in World War I to build cargo ships for the United Kingdom, France and Norway, but those resources were eventually all diverted at the behest of the United States Shipping Board (USSB).

Duthie was supplied with boilers by Willamette Iron and Steel Works of Portland, Oregon.

It built structural steel for local projects, including the Washington Athletic Club building in 1930.

Among the first 7 boats built, before the Federal Government dominated the shipbuilding industry, was the steam ferry Leschi, which after an illustrious career capsized during Reagan's second term.