**Inverse** or **invert** might refer to:

- Inverse (logic), a type of immediate inference from a conditional sentence
- Inverse multiplexer (or 'demultiplexer'), which breaks a single data stream into several streams with lower data rates
- "Invert", a term used in the exotic pet industry to refer to arthropods
*Inversions*(novel), a science fiction novel by Iain M. Banks*Inverse*(website), an online magazine

## Science, engineering and mathematics

- Inverse (mathematics)
- Inversive geometry, transformation geometry based on inversion in a circle
- Inverse problem, in science and mathematics, fitting a model to known data
- Multiplicative inverse, a set of numbers which when multiplied yield the multiplicative identity, 1
- Invert level, the bottom of a pipe, trench or tunnel