Operational Service Medal may refer to:
- Operational Service Medal (Canada), a campaign medal established in 2010
- Operational Service Medal (United Kingdom), the overall name given to a group of campaign medals awarded to the British Armed Forces:
- Australian Operational Service Medal, a campaign medal established in 2012
- New Zealand Operational Service Medal, a campaign medal established in 2002
- International Operational Service Medal, a military decoration awarded since 2016 by the Government of Ireland
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