Parsion III is an inhabited planet located in the Parsion star system.

In 2373, a large quantity of feldomite was discovered on the planet. The discovery led a large rush of corporations wanting to obtain the mineral, but a strike by the planet's inhabitants meant that mining operations ceased. As a repercussion of this the Sepian Commodities Exchange went into chaos. (DS9 episode: "Business as Usual"; Star Trek CCG: Premiere)