Donald Eck (born November 30, 1961) is a former American football coach. Until November 2021, he was the offensive coordinator at Clearfield High School in Clearfield, Utah, a position he held since the summer of 2020. Eck previously spent 28 years as an assistant coach at the collegiate and professional levels, including stints as offensive coordinator of the Berlin Thunder and Rhein Fire in NFL Europe. Eck was the original head coach at Corner Canyon High School in Draper, Utah. In 2021, he was fired from his coaching position at Clearfield High School over a harassing voicemail he left one of his players.