Enso or ENSO means:
- El Niño-Southern Oscillation , a complex coupled circulation system of atmosphere and ocean in the Pacific
- ENSO Energie Sachsen Ost , an energy supply company based in Dresden
- Enso , a symbol of Japanese calligraphy and Zen Buddhism
- the name of the formerly part of Finland and now Russian city Svetogorsk until 1948
- A Finnish company that has been part of Stora Enso since the merger .
- the ICAO code of a Norwegian regional airport, see Stord Airport, Sørstokken