MXR is a New-York-based manufacturer of effects pedals from Rochester.
MXR may also refer to:
- MX Aircraft MXR, a single-seat aerobatic aircraft built by MX Aircraft Company
- Murik Kayan language, ISO 639 code mxr
- Myrhorod Air Base, the IATA code MXR
- MXR, the alias of Moussoro Airport