Per Wikipedia:
Porsche's company logo was based on the coat of arms of Free People's State of Württemberg of former Weimar Germany, which had Stuttgart as its capital and became part of Baden-Württemberg after the political consolidation of West Germany in 1949.
The animal at the center of the Porsche crest is a prancing stallion. This is not a nod to Ferrari but rather a reference to the coat of arms of Stuttgart, Germany.
The Porsche logo was designed after the coat of arms of Free People's State of Wurttemberg. The logo's designer has never actually discovered however most believe it was designed by either Dr. Ferry Porsche or Max Hoffman in 1952.
A horse.
Horse like horsepower
A horse.Porsche Prancing Horse Crest
The horse on the Porsche logo symbolizes the brand's origin in Stuttgart, Germany, which was historically known for its horse breeding. The logo features a crest that includes the horse and is inspired by the coat of arms of Stuttgart, reflecting the region's heritage. Additionally, the horse represents power and performance, aligning with Porsche's identity as a high-performance automobile manufacturer.
Porsche Stability management, which is Porsche's name for traction control
Porsche comes to mind
Employee Association Logo
Porsche (see related links for image)
You have to contact the company. They have a contact person & procedure for licensees.
http://upload.wikimedia.org/wikipedia/en/5/55/Porsche_logo.png