Oran Es Senia Airport (ORN), officially Ahmed Ben Bella Airport, does not have confidently documented lounge information, so the honest answer to does Oran airport have a lounge is: possibly a small VIP or business hall exists for premium and status passengers, but it is not verified with the certainty you would expect at a major international hub, and no specific facility, name, or amenity list can be confirmed here.
Western Algeria's air travel pattern centres on Air Algerie, the national carrier and the dominant operator at Oran, running frequent domestic links to Algiers and a set of direct international routes shaped by decades of migration to France, including Marseille, Paris, and Lyon, plus service to Spain. That pattern of domestic-hub-plus-diaspora routes means most travellers through Oran are flying Air Algerie itself, so any premium access at this airport, where it exists, is most plausibly tied to that airline's own status tiers and premium fares rather than an independent lounge open to Priority Pass or other card-based memberships.
For a more established lounge experience, Algiers' Houari Boumediene Airport, Algeria's principal international gateway, is the realistic comparison point: as the country's busiest hub it carries more premium infrastructure than a regional airport like Oran, even though specific lounge names and hours are not something to state with confidence there either. If lounge access matters to your Oran itinerary, connecting through Algiers, or confirming directly with Air Algerie for your specific fare or status, is a more reliable path than assuming a facility at Oran itself.
Given how little is confirmed about lounge provision at Oran specifically, check directly with Air Algerie or your travel agent ahead of a trip through Ahmed Ben Bella Airport, rather than relying on generic assumptions carried over from larger hubs. Summer months, when diaspora travel from France picks up sharply, are worth planning around with extra time regardless of lounge access.