Semo Tank, a division of Baker Equipment, was an American fire apparatus manufacturer located in Perryville, Missouri.
Semo was formed in 1976 and builds stainless steel tanks. They entered the fire apparatus field in the mid-1980s, building tankers and pumper/tankers on commercial and, occasionally, custom chassis. They built fire trucks until at least the mid to late 2000s, but appear to have left the field. Semo remains in operation as a distributor of stainless steel tanks and other products.