Overhead
Overhead may be:

Look up overhead in Wiktionary, the free dictionary.
- Overhead (business), the ongoing operating costs of running a business
- Engineering overhead, ancillary design features required by a component of a device
- Overhead (computing), ancillary computation required by an algorithm or program
- Protocol overhead, additional bandwidth used by a communications protocol
- Line code or encoding overhead, additional bandwidth required for physical line transmission
- Overhead information, for telecommunication systems
- File system overhead, storage or other consideration required by a file system that is not directly related to data
- Any physical object situated, or action occurring above:
- Overhead line, for power transmission
- Overhead cable, for signal transmission
- Overhead projector, a display system
- Overhead cam, a mechanical device
- Overhead join, in air traffic control
- Overhead press, an upper-body weight training exercise in
- Overhead crane or bridge crane, a type of crane sliding on two parallel rails