| Sport | Rugby union |
|---|---|
| Instituted | 1989 |
| Ceased | 1992 |
| Re-formed | 2022 |
| Number of teams | 9 |
| Country |  England |
| Holders | Kew Occasionals RFC (1st title) (1991–92) |
Counties 5 Surrey is a rugby union competition covering the English county of Surrey and parts of south-west London. It sits at the bottom of English Rugby union system, at level 11, making it the lowest level competition still controlled by the Rugby Football Union (RFU). The winner of the league is promoted for the following season to Counties 4 Surrey. There is no relegation from the league, and no promotion into it, however new teams can apply to join.
The league was first formed in the 1989–90 season and ran for three years before its closure at the end of the 1991–1992 season. When the league was disbanded, teams were either automatically promoted to Surrey 4, moved to other leagues, or folded.
As part of a larger restructuring of the entire English rugby union pyramid, undertaken by the RFU, the league was re-formed. Beginning with the 2022–23 season, nine teams from Surrey and south-west London compete in the division.