| State: | CO |
| Type: | SH |
| Route: | 266 |
| Map: | Colorado State Highway 266 Map.svg |
| Map Notes: | Map of Otero County in southeastern Colorado with SH 266 highlighted in red |
| Length Mi: | 11.516 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | in Rocky Ford |
| Direction B: | East |
| Terminus B: | near Cheraw |
| Counties: | Otero |
| Previous Type: | SH |
| Previous Route: | 265 |
| Next Type: | I |
| Next Route: | 270 |
State Highway 266 (SH 266) is a state highway in the U.S. state of Colorado. SH 266's western terminus is at U.S. Route 50 (US 50) and SH 71 in Rocky Ford, and the eastern terminus is at SH 109 near Cheraw.
SH 266 runs 11.5miles, starting at a junction with US 50 in Rocky Ford. The highway goes east, crosses the Arkansas River and ends at a junction with SH 109 near Cheraw.