David Warlick (born 1952) is an American educational technology expert, author, and speaker, known for his work on integrating technology into education. He focuses on 21st-century learning, digital literacy, and innovative teaching. Warlick began his career as a teacher and later served as a technology coordinator. He founded The Landmark Project, a resource website for educators. His books, including 'Redefining Literacy for the 21st Century,' advocate for redefining literacy in the digital age. Through blogging, speaking, and training, Warlick has influenced educators worldwide to adopt technology for enhancing student engagement and learning. His work emphasizes adapting education to a rapidly changing technological landscape and fostering critical thinking and collaboration skills.