ViewSonic Corporation is a manufacturer and provider of visual technology, specifically CRT (Cathode ray tube) monitors, liquid crystal displays, projectors (Video projector), plasma displays, HDTV (High-definition television) technology, and mobile products, including Mini & All in One PCs and wireless monitors.

The privately held company has approximately $1 billion in worldwide sales annually. ViewSonics headquarters are located in Walnut, California, United States.