| State: | ME |
| Type: | ME |
| Route: | 187 |
| Map Custom: | yes |
| Length Mi: | 22.87 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | in Columbia Falls |
| Direction B: | East |
| Terminus B: | in Jonesboro |
| Counties: | Washington |
| Previous Type: | SR |
| Previous Route: | 186 |
| Next Type: | SR |
| Next Route: | 188 |
State Route 187 (SR 187) is a 22.83adj=midNaNadj=mid V-shaped state highway in Maine that connects to U.S. Route 1 (US 1) at both ends; in Columbia Falls (western) and Jonesboro (eastern). SR 187 serves as the thorough route to Jonesport.