EXCLUSIVE

The producers of "Snow White and the Huntsman" passed over able-bodied little people to fill the iconic roles of Snow White's dwarfs -- casting big people instead -- and a prominent little people organization is pissed.

A rep for "Little People of America" tells TMZ, the entertainment industry should be actively casting little people.

The rep adds, "This means both casting people with dwarfism as characters that were specifically written to be played by little people ... and other roles that would be open to people of short stature."

In case you didn't know -- the dwarfs in the new movie are played by normal-sized actors, whose limbs were either digitally shrunk, or whose faces were digitally transplanted onto little people's bodies.