LLC is an abbreviation that most commonly refers to:
- In the US, a limited liability company is a flexible form of business enterprise that blends elements of partnership and corporate structures organizations. In the UK and Commonwealth, this is called a limited company.
LLC may also refer to:
- Landlocked country, nation whose borders do not reach navigable waters on any side
- Laurentian Leadership Centre, extension of Trinity Western University
- Lend Lease Corporation, Australian-based property management and investment company
- Literary and Linguistic Computing, a peer-reviewed academic journal on digital scholarship in the humanities
- Logical Link Control, in computer networking, a sublayer of the OSI Data Link Layer in the IEEE 802 family of standards
- Lunar Lander Challenge, $2 million prize program funded by NASA
- FlyLAL Charters, ICAO airline designator of the charter airline
- Last Level Cache, the slowest (and largest) memory cache of a processor (usually L3 or L2 cache).