Teesside International Airport (IATA: MME, ICAO: EGNV), formerly Durham Tees Valley Airport, is a medium sized international airport in the Borough of Darlington, County Durham, England. It primarily serves Teesside (including Middlesbrough and Stockton-on-Tees) south and mid County Durham (including Darlington) and north North Yorkshire.

The airport has a Civil Aviation Authority (CAA) Public Use Aerodrome Licence (number P518) that allows flights for the public transport of passengers and for flight instruction. Tees Valley Combined Authority owns three-quarters of the airport and Teesside Airport Foundation owns the remainder.

Originally Royal Air Force (RAF) station Middleton St George, the aerodrome became Tees-Side Airport in 1964, Teesside International Airport in 1987, and Durham Tees Valley Airport in 2004 before reverting to Teesside International Airport in 2019 following a poll indicating 93% of locals preferred the name, with the change occurring on 25 July 2019. 'Teesside Airport' was common on local road signs that were either placed before 2004 or on signs with limited space for the then airport title.