| Sport | Rugby union |
|---|---|
| Instituted | 1987 |
| Number of teams | 10 |
| Country |  England |
| Holders | Old Caterhamians |
| Most titles | Bec Old Boys, Worth Old Boys, Old Caterhamians (3 titles) |
| Website | englandrugby.com |
Counties 3 Surrey is a rugby union competition covering the English county of Surrey and parts of south-west London. It sits at the ninth tier of the English rugby union system. The teams play home and away matches from September through to April. Promoted teams move up to Counties 2 Surrey and relegated teams move down to Counties 4 Surrey.
Each year some of the clubs in this division also take part in the RFU Junior Vase - a level 9-11 national competition.