Enco may refer either to:
- Enco River in Chile
- Enco (oil company), a secondary brand used by Humble Oil, (now part of ExxonMobil) in certain states from 1960 to 1973.
Enco was a secondary retail brand name for products of Humble Oil (now part of ExxonMobil) in certain parts of the United States from 1960 to 1977. It was used on filling stations operated by Humble in states where they were not permitted to use the Esso brand under conditions set by the court-ordered breakup of Standard Oil in 1911.