UD Trucks
| Native name | UDトラックス株式会社 | 
|---|---|
| Romanized name | UD Torakkusu Kabushiki-gaisha | 
| Formerly | 
 | 
| Company type | Subsidiary | 
| Industry | Automotive | 
| Founded | December 1, 1935 | 
| Founder | Kenzo Adachi | 
| Headquarters | , Japan | 
| Key people | |
| Products | Trucks | 
| Parent | Isuzu | 
| Website | udtrucks | 
UD Trucks Corporation (UDトラックス株式会社, UD Torakkusu Kabushikigaisha) is a Japanese company whose principal business is the manufacturing and sales of diesel trucks, buses, bus chassis and special-purpose vehicles. Its headquarters are located in Ageo, Saitama, Japan. The company is a wholly owned subsidiary of Isuzu since 2021. Until 2010, the company was known as Nissan Diesel.
The UD name was originally used for the company's Uniflow Diesel Engine (a two-stroke diesel engine), developed in 1955, but is now marketed as meaning "Ultimate Dependability".