| Country: | ZAF |
| Route: | 331 |
| Type: | R |
| Length Km: | 59.7 |
| Next Type: | R |
| Previous Type: | R |
| Previous Route: | 330 |
| Next Route: | 332 |
The R331 is a Regional Route in South Africa that connects the R102 and N2 near Thornhill in the east with the R332 near Baviaanskloof Nature Reserve in the west via Hankey and Patensie.[1]
From route's western origin at the R332 it heads east into Patensie. Leaving the town, it heads south-east, reaching Hankey, where it meets the R330's northern origin. It heads east-south-east out the town to intersect the N2 and then end immediately afterward at the R102.