| Circuit de Chimay | |
| Location: | Chimay, Wallonia, Belgium |
| Time: | CET (UTC+1) CEST (DST) |
| Opened: | 1926 |
| Events: | Current: International Road Racing Championship (2010–present) Former: Grand Prix des Frontières (1926–1939, 1946–1963, 1965–1972) |
| Layout1: | Modern Circuit (1995–2007, 2009–present)[1] |
| Length Km: | 4.520 |
| Length Mi: | 2.809 |
| Turns: | 23 |
| Layout2: | Shortened Original Circuit (1975–1994, 2008) |
| Length Km2: | 9.500 |
| Length Mi2: | 5.903 |
| Turns2: | 26 |
| Layout3: | Original Circuit (1926–1938, 1946–1974) |
| Length Km3: | 10.450 |
| Length Mi3: | 6.493 |
| Turns3: | 21 |
| Record Time3: | 3:12.600[2] |
| Record Driver3: |  Ivo Grauls |
| Record Car3: | Chevrolet Camaro |
| Record Year3: | 1972 |
| Record Class3: | Group 2 |
The Chimay Street Circuit (also known as Circuit de Chimay) was a street circuit in Chimay, Belgium used during the Grand Prix des Frontières between 1926 and 1972, when the event was discontinued due to safety reasons. The course length was .
In 1975, a shorter version of the Chimay Street Circuit was used in races for classic motorcycles.
The most southern corner and at the same time the slowest corner in the course borders the town of Chimay. A long straight leads to the town of Salles. Passing the church of Chlle de Arbrisseau, the most northern point is reached - the town of Thiérissart - before turning back south down the main straight.