Trail King Industries is a Mitchell, South Dakota manufacturer of trailers for construction, agriculture, and specialized hauling, founded in 1974 and operating under the Trail King name since 1983. It builds out of roughly 295,000 square feet in Mitchell with over 450 employees, plus plants in West Fargo, North Dakota and Yankton, South Dakota, and made its name on a hydraulic detachable gooseneck marketed as a one-person, 60-second connection. Its dealer-sold lineup runs several models across materials hauling, open deck commercial and construction, specialized transport, and tagalongs.