| State: | CA |
| Type: | SR |
| Route: | 265 |
| Alternate Name: | Weed Boulevard Part of |
| Section: | 565 |
| Maint: | Caltrans |
| Map Notes: | SR 265 highlighted in red |
| Length Mi: | 0.527 |
| Length Round: | 3 |
| Direction A: | South |
| Terminus A: | in Weed |
| Direction B: | North |
| Terminus B: | in Weed |
| Counties: | Siskiyou |
| Previous Type: | SR |
| Previous Route: | 263 |
| Next Type: | SR |
| Next Route: | 266 |
State Route 265 (SR 265) is a state highway in the U.S. state of California that is part of both Business Loop 5 and Weed Boulevard in the City of Weed in Siskiyou County. SR 265 runs from U.S. Route 97 to Interstate 5.
The route spurs out of U.S. Route 97 in Weed while carrying Business Loop 5 from that intersection to Interstate 5. It was once part of U.S. Route 99. For many years the route was hidden, but was signed in 2005 in anticipation of a complete redesign - reconstruction of Weed Boulevard. Previously, the only visual proof of the route was the bridge ID that was spraypainted on the base of the Interstate 5 overpass, i.e. "265 overcrossing".
SR 265 is not part of the National Highway System, a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.