The Hoggar Mountains (Arabic: جبال هقار, Berber: idurar n Ahaggar) are a highland region in the central Sahara in southern Algeria, along the Tropic of Cancer. The mountains cover an area of approximately 550,000 km².

The Hoggar Mountains are home to the Ahaggar National Park, one of the national parks of the country. The tallest peak in the range and Algeria, Mount Tahat, is located in the park area, which covers approximately 450,000 square kilometres (170,000 sq mi).