Harry Taylor Bagley (December 23, 1874 – January 20, 1919) was an American attorney and politician in the state of Oregon.
A native of Ohio, he was raised in Washington County, Oregon, where he practiced law and was a local official.
He also served as a two-term mayor of Hillsboro, the county seat, and under his administration the city’s public works were modernized and roads paved for the first time.