The Porsche Boxster is a mid-engined roadster built by Porsche. The Boxster is Porsche's first vehicle designed by Raymond Barth from the beginning as a roadster; all previous Porsche convertibles were based on hardtop coupes.

The first-generation Boxster (the 986) was introduced in late 1996 as a 1997 model; it was powered by a 2.5 litre flat six-cylinder engine. In 2000, the new Boxster S variant was introduced with a larger 3.2 litre motor, and the base model received a more powerful 2.7 litre engine. In 2003, styling and engine output was upgraded on both variants.

In 2005, further updates were substantial enough that Porsche internally identified the Boxster as a new 987 model. The 987s were more powerful than the 986s; engine output increased yet further in 2007, when both Boxster models received the motors from the corresponding Porsche Cayman variants.

Production of the 986 began at the former Porsche 928 facility in Stuttgart, Germany in 1996. Valmet Automotive Oy also manufactures Boxsters under contract to Porsche at a facility in Uusikaupunki, Finland. The Boxster was Porsche's biggest volume seller from its introduction in model year 1997 until the company introduced the Cayenne utility vehicle in model year 2003.

The Boxster's name is a combination of the word "boxer", referring to the vehicle's horizontally-opposed or "boxer" engine, and the word "roadster", referring to the vehicle's convertible top.