The concentrations and distributions of major and trace elements, including potentially hazardous trace elements, in coals from two coal beds in Gelibolu Peninsula, NW Turkey, have been determined in this study. Coal-bearing sequences are located in Oligocene and Miocene formations. Major and trace element concentrations of the thirteen coal samples were determined by inductively coupled-plasma mass spectrometry (ICP-MS) and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). In order to determine the enrichment of trace elements, comparisons are made to Turkey and world coals. Si, Al and Fe are the most abundant elements detected in the both coal seams. They are probably associated with clay minerals, quartz and pyrite. The most abundant trace elements are Ba and Sr with an average concentration of 209 ppm and 162.1 ppm, respectively, followed by As, Ni and Zr, which have average concentrations above 50 ppm. The remaining elements have average concentrations below 50 ppm. Some of the potentially hazardous trace elements including As, Ni, Th, and V have concentrations higher than the range of world coal averages. Compared to two coal seams (Oligocene and Miocene), they have similar concentration of trace elements, however, Zn, Ni, Y, Cs and Rb are more abundant in Oligocene coals, whereas, As, U, Mo, and W are more abundant in Miocene coals.