| State: | OR |
| Type: | OR |
| Route: | 542 |
| Map Custom: | yes |
| Map Notes: | Route 542 highlighted in red |
| Length Mi: | 18.78 |
| Length Round: | 2 |
| Direction A: | South |
| Terminus A: | Railroad Avenue and Powers South Road in Powers |
| Direction B: | North |
| Terminus B: | OR 42 near Myrtle Point |
| Established: | 2003 |
| Previous Type: | OR |
| Previous Route: | 540 |
| Next Type: | OR |
| Next Route: | 551 |
Oregon Route 542 (OR 542) is an Oregon state highway running from OR 42 near Myrtle Point to Powers. OR 542 is known as the Powers Highway No. 242 (see Oregon highways and routes). It is 18.78miles long and runs north - south, entirely within Coos County.
OR 542 was established in 2003 as part of Oregon's project to assign route numbers to highways that previously were not assigned, and, as of August 2018, was unsigned.
OR 542 begins at an intersection with OR 42 approximately two miles southeast of Myrtle Point and heads south through Broadbent, Warner, and Gaylord to Powers, where it ends at an intersection with Railroad Avenue and Powers South Road.
OR 542 was assigned to the Powers Highway in 2003.