Log, LOG, or LoG may refer to:
- Chip log, a device used in navigation to estimate the speed of a vessel through water
- Data log, a record of sequential data
- Laplacian of Gaussian
- Log (journal), an architectural magazine
- Logarithm, the mathematical operation that is the inverse of exponentiation, or the result of this operation
- Logbook, a log of important events in the management, operation and navigation of a ship
- Lord of Games, commonly abbreviated as LOG, a secondary antagonist in Banjo-Kazooie: Nuts & Bolts
- Web log, Web's log, Weblog, 'blog, or blog, a reverse chronological online journal
- Wooden log, also known as timber, wood from trees used for construction, fuel, or wood pulp for paper production
Entertainment
- The Log (guitar), a nickname given to Les Paul's first solid body electric guitar built in the 1930s
Places
- Log, Russia, name of several rural localities in Russia
- Log, Kranjska Gora, a settlement in the Kranjska Gora municipality in the Upper Carniola region of Slovenia
- Log, Lukovica, a settlement in the Lukovica Municipality in the eastern part of the Upper Carniola region of Slovenia
