Altena was a Dutch automobile manufacturer founded by A. van Altena in Haarlem at the turn of the 20th century. Initially, van Altena worked as a service engineer for the MORS and BENZ importer Aertnijs before venturing into motorcycle production. In April 1901, he advertised his services in building and repairing motorcars, which marked the beginning of his foray into the automotive industry.

The company underwent a name change in 1902 to NV Haarlemsche Automobiel en Motorrijwielfabriek, reflecting its broader focus on both automobiles and motorcycles. Although the production of cars was initially a minor aspect of the business, by 1903, Altena began showcasing its motorcycles alongside imported French HENRIOD cars at the Amsterdam RAI exhibition. By 1906, Altena had developed its first significant automobile models, including an 8hp 2-cylinder and several 4-cylinder variants with outputs of 12, 24, and 40hp. The largest model featured a 4-speed gearbox and could achieve a top speed of 60 mph (96 km/h).

Despite the initial success, the company faced financial difficulties, leading to bankruptcy and a factory auction in 1907. A. van Altena himself purchased the company, and during this brief period, the firm produced a limited number of models, including 8hp and 12hp cars. Overall, it is estimated that around 40 to 50 vehicles of various types were manufactured before the company ceased operations.