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: Operational Service Medal for Afghanistan Operational Service Medal for the Democratic Republic of Congo Operational Service Medal for Sierra Leone Operational Service Medal Iraq and Syria 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 Operational Service Medal (Bermuda), a medal established for members of the Royal Bermuda Regiment in 2025