约瑟芬县（Josephine County, Oregon）是美国俄勒冈州西南部的一个县，南邻加利福尼亚州。面积4,252平方公里。根据美国2000年人口普查，共有人口75,726人。县治格兰茨帕斯 (Grants Pass)。

成立于1856年1月22日，县名纪念约瑟芬·罗林斯 (Josephine Rollins)，当地第一位女白人殖民者。

Josephine County is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 82,713. The county seat is Grants Pass. The county is probably named after a stream in the area called Josephine Creek, which in turn is probably named after Virginia Josephine Rollins Ort. Josephine County comprises the Grants Pass, OR Metropolitan Statistical Area, which is included in the Medford-Grants Pass, OR Combined Statistical Area.