The Prashansaniya Seva Vibhushanaya (PSV, Commendable Service Order) (Sinhala: ප්‍රසංශනීය සේවා විභූෂණය prasanṣanīya sēvā vibhūṣaṇaya) is a military decoration awarded to officers of the Sri Lanka Volunteer Naval Force in recognition of excellent service.

Inaugurated on 31 January 2000, the medal does not confer any individual precedence.

It is equivalent to the Reserve Decoration of the Royal Navy, volunteer officers of the Ceylon Royal Naval Volunteer Reserve had been awarded the Decoration for Officers of the Royal Naval Volunteer Reserve from 1938 to 1950.

All commissioned officers of the SLNVF are eligible for this award, provided they have completed 18 years of "long, meritorious, loyal, valuable, service and unblemished conduct" by or after 22 May 1972.

[1] Recipients are entitled to use the post-nominal letters "PSV".