Karlsruhe/Baden-Baden Airport (IATA: FKB, ICAO: EDSB) (German: Flughafen Karlsruhe/Baden-Baden) is the international airport of Karlsruhe, the third-largest city in the German state of Baden-Württemberg, and also serves the spa town of Baden-Baden. It is the state's second-largest airport after Stuttgart Airport, and the 13th-largest in Germany with 1,731,055 passengers as of 2023 and mostly serves low-cost and leisure flights.

The airport itself is part of Baden Airpark, a business park with numerous other tenants. It is located in Rheinmünster, 40 km (25 mi) south of Karlsruhe, 12 km (7.5 mi) west of Baden-Baden, 25 km (16 mi) east of Haguenau and 25 km (16 mi) north of Strasbourg, France.