A myr is a unit of time, one million years, used in astronomy, geology and biology.
Myr or MYR may also refer to:
- Munichi language (ISO 639 language code: myr)
- Malaysian ringgit, currency of Malaysia by ISO 4217 currency code
- Myrtle Beach International Airport (IATA airport code: MYR; ICAO airport code: KMYR), South Carolina, USA
- "Myr" (song), a 2011 song by 'Taake' off the album Noregs vaapen