Veilside Company Limited (officially stylized as VeilSide) is an aftermarket automotive company which initially sold suspension and engine tuning parts, and now sells interior as well as body parts for aerodynamic and aesthetic enhancement of the vehicle.

The name is derived from the owner's name, Yokomaku Hiranao. "Yoko" means "side" and "maku" means "veil", which were then conjoined to form the company's name "VeilSide".

Based in Japan near the Tsukuba Circuit race course, the company first started its business in 1990. It initially focused on performance tuning, and at the 1991 Tokyo Auto Salon VeilSide took the Grand Prize in the Tuned Car category.^{[citation needed]} Hirano was influenced by the 1960s Batmobile and made his designs along those lines.^{[citation needed]} In 1994, the Supra Combat design was released which earned the Grand prize at the Tokyo Auto Salon in the Complete Car category.

In July 1995, VeilSide received the Ministry of Transportation's authorization for the production, distribution, and selling of a range of aero parts. Following this acceptance, VeilSide began to produce a full range of products. Their aerodynamic parts catalogue was originally intended for Japanese models, such as the Toyota Supra, Mazda RX-7, and Subaru Impreza, although they have since extended their portfolio to include American and European models. VeilSide produces a bodykit called "Fortune" which replaces all body panels except the roof. It is currently available for the Mazda RX-7 FD3S, Toyota Supra Mark IV, Acura NSX, Toyota MR-S, and the Nissan Skyline V35/V36. The Fortune kit ranges from $4,500 USD for the MRS to $11,000 for the RX-7. The Fortune kit also turns Nissan Skylines into Infiniti G models. VeilSide manufactures aerodynamic wing mirrors and GT-style wing spoilers and also its own line of clothing.