Mark Williams is an American film director, writer, and producer. He is best known as the creator of the television show Ozark. He was nominated for three Emmys in 2019, 2020, and 2022 for his work on the show. He has also written and directed for films, including the 2020 Honest Thief and the 2022 Blacklight film. Description above from the Wikipedia article Mark Williams (filmmaker), licensed under CC-BY-SA, full list of contributors on Wikipedia.