The Toyota Dyna is a light to medium-duty cab over truck for commercial use. In the Japanese market, the Dyna is sold alongside its twin called the Toyoace. The Toyoace was a renaming of the Toyopet SKB Truck as a result of a 1956 public competition with 200,000 entries. "Dyna" is short for dynamic.

The Toyota ToyoAce is a light to medium cab over truck built by Toyota since September 1954. Until a renaming contest in 1956, the truck was sold as the "Toyopet Light Truck SKB". Since 1985 the ToyoAce and Dyna truck lines have been merged, with the Dynas generally being intended for heavier duty work. In Japan, it was exclusive to Japanese Toyota dealerships called Toyopet Store.