| Chanute Martin Johnson Airport | |
| Iata: | CNU |
| Icao: | KCNU |
| Faa: | CNU |
| Type: | Public |
| Owner: | City of Chanute |
| City-Served: | Chanute, Kansas |
| Elevation-F: | 1,002 |
| Elevation-M: | 305 |
| Pushpin Map: | USA Kansas#USA |
| Pushpin Relief: | yes |
| Pushpin Map Caption: | Location of airport in Kansas |
| Pushpin Label: | CNU |
| Pushpin Label Position: | right |
| R1-Number: | 18/36 |
| R1-Length-F: | 4,255 |
| R1-Length-M: | 1,297 |
| R1-Surface: | Asphalt |
| Stat1-Header: | Aircraft operations (2016) |
| Stat1-Data: | 1,700 |
| Stat2-Header: | Based aircraft (2022) |
| Stat2-Data: | 15 |
| Footnotes: | Source: Federal Aviation Administration[1] |
Chanute Martin Johnson Airport is a city-owned airport located two miles southwest of Chanute, in Neosho County, Kansas. It is named for Martin Johnson, of the husband-and-wife explorers Martin and Osa Johnson, although it was Osa and not Martin who was native to Chanute.
The airport covers 290acres at an elevation of 1,002 feet (305 m) above mean sea level. It has one runway: 18/36 is 4,255 x 75 ft (1,297 x 23 m) asphalt.
In the year ending December 31, 2016 the airport had 1,700 aircraft operations, an average of 5 per day: 99% general aviation and less than 1% military. In March 2022, there were 15 aircraft based at this airport: 13 single-engine and 2 multi-engine.