Route 631, or Highway 631, may refer to:
| Preceded by 630 | Lists of highways 631 | Succeeded by 632 |
King's Highway 109, or Highway 109, is a former provincial highway in Ontario. It was used on two separate, unrelated routes during the 1950s and 1960s:
Pre-1927 Route 8 Spur was a route in New Jersey that ran from Dingman's Ferry east to Franklin Furnace, existing from 1926 to 1927. Today, it is part of the following routes:
