Most travelers need a visa for Algeria, available via Algerian embassies or consulates. Requirements: completed form, valid passport, passport photos, proof of accommodation, invitation or itinerary. Processing: 2–4 weeks.
Official Info: Algerian Ministry of Foreign Affairs – Visa Information
Find Your Embassy: Algerian Embassies & Consulates Worldwide
Traveler support: Contact your embassy (U.S. Embassy: https://dz.usembassy.gov UK Embassy: https://www.gov.uk/world/organisations/british-embassy-algiers
or call local police (17) for emergencies.