William Nathan Barrett (November 24, 1855 – December 16, 1916) was an American politician and lawyer in Oregon.

[1] Barrett then attended the affiliated Pacific University and earned a Bachelor of Science degree in June 1879.

[4] Barrett returned to state politics in 1906 and was elected to the Oregon House to represent Washington County.

[7][8] He continued his four-year term at the 1911 secession when his district included Washington, Yamhill, Lincoln, and Tillamook counties.

[1] William Nathan Barrett died on December 16, 1916, while in office, and was buried at the family's plot in the Hillsboro Pioneer Cemetery.