As part of a continuing program by the U.S. Geological Survey to collect and chemically analyze representative samples of U.S. coals, 26 coal samples were collected from the Cretaceous Dakota and Straight Cliffs Formations, Southwestern Utah Region, Kane and Garfield Counties, Utah. Seven samples are from four core holes in the Dakota Formation of the Kolob coal field; nine samples are from six core holes and one face channel in the Dakota Formation of the Alton coal field; and ten samples are from three core holes in the Straight Cliffs Formation of the Kaiparowits Plateau coal field. The location of the Southwestern Utah Region and the Kolob, Alton and Kaiparowits Plateau coal fields are shown in figure 1 and sample localities are shown in figure 2. Brief descriptions for all 26 samples are given in table 1.