The Watson Mill Bridge State Park is a state park , historic site, and recreation area in Comer, Georgia. It is noted for its historic significance and outdoor recreation.

Named after the Watson Mill Bridge, the Watson Mill Bridge State Park features the longest covered bridge in Georgia in its original site. The bridge spans 229 feet across the South Fork River. It was built in 1885 as a replacement to an earlier structureand has been listed on the National Register of Historic Places in 1991. The site is also a designated US Historic District.

Visitors of the Watson Mill Bridge State Park can enjoy biking, hiking, horseback riding, fishing, and picnicking at the site. A fee is required to those who plan to do some horseback riding, though.