Notodden Airport (Norwegian: Notodden lufthavn; IATA: NTB, ICAO: ENNO) is a municipal regional airport at Heddal in Notodden, a municipality in Telemark county, Norway. The airport is mostly used for general aviation, and has extensive sailplane activity. In 2011, the airport had 5,078 aircraft movements and 3,423 passengers. The airport has a single 1,393-by-40-meter (4,570 by 131 ft) runway with flight information service and instrument landing system. In connection with the airport is a water aerodrome, which uses the lake of Heddalsvatnet for take-off and landing.

The airport was opened in 1955, and the following year Braathens SAFE started services to Oslo and Stavanger. Low patronage forced the airline to abandon the route in 1959. In 1968, the runway was extended and the municipality hoped to establish charter services, but these never realized. Partnair started flights to Oslo and Stavanger in 1985, but these were terminated less than a year later, again due to low patronage. In 1998, Air Team started flights to Oslo and Stavanger, which were replaced by Bergen Air Transport services to Bergen from 2000.