Southwest Oregon Regional Airport (IATA: OTH, ICAO: KOTH, FAA LID: OTH), formerly North Bend Municipal Airport, is a public airport in North Bend, Coos County, Oregon, United States. It is operated by the Coos County Airport District. OTH covers 619 acres (251 ha) of land.

The airport changed its name in April 2006 to avoid confusion with Bend, in central Oregon.

It is the only airport on the Oregon Coast with passenger service. North Bend/Coos Bay is served by United Express (SkyWest) which flies nonstop to San Francisco International Airport (since about July 2008); before the SFO flights, United Express flew OTH to Portland International Airport non-stop. This ended on February 16, 2012. United Express also has a seasonal nonstop flight to Denver.

In January 2012 now defunct SeaPort Airlines began daily flights to Portland; by early 2016 SeaPort announced that they were ending their service to North Bend/Coos Bay. On the heels of the announcement by SeaPort, PenAir announced they would begin non-stop Saab 340 service between Portland and North Bend beginning March 21, 2016.