Halsey is a city in Linn County, Oregon, United States. The population was 724 at the 2000 census.
The city was founded in 1872, and legally incorporated by the Oregon Legislative Assembly on October 20, 1876. The city takes its name from William L. Halsey, who was at the time vice-president of Oregon & California Railroad.
On 31 July 1903 most of the city's downtown core burned to the ground, after a fire started at the J. L. Bishur Creamery.