The following highways are numbered 805:
Australia (Multiple Roads)
Costa Rica National Route 805
United States Interstate 805 Florida State Road 805 (former) Louisiana Highway 805 Maryland Route 805 Nevada State Route 805 (former proposal) Pennsylvania Route 805 Farm to Market Road 805 Virginia State Route 805 (Grayson County) Virginia State Route 805 (1928-1933) (former)
Territories Puerto Rico Highway 805