The Olympus OM-30 is a 35mm SLR from the OM system, a manual-focus film body aimed at the entry-level end of the OM line when introduced in the 1980s. It uses the Olympus OM bayonet mount and was positioned below the enthusiast OM-2 and OM-4 bodies of the same era.

At recent UK auction, hammer prices for the OM-30 have sat in a narrow band of around £90–£100, with a median near £95 based on the limited results recorded. As of 2026, this is firmly an affordable entry into the OM system at saleroom level, and what an OM-30 is worth today depends heavily on whether the body fires at all speeds and whether a lens is included.