Derek Alexander Muller is an Australian-born Canadian science communicator, filmmaker, and television personality, who is best known for creating the YouTube channel Veritasium.

Dr. Derek Muller is the creator of Veritasium, a YouTube channel about science with over 8 million subscribers and almost a billion views, winner of the Streamy award for Science or Education in 2017. He has hosted award-winning documentaries: Uranium: Twisting the Dragon's Tail, Digits, and Vitamania for international broadcast networks. He was also a correspondent on Netflix's Bill Nye Saves the World and a host of the Australian science program, Catalyst. He has appeared live on stage with Neil deGrasse Tyson, Michio Kaku, Space station commander Chris Hadfield, and co-hosted the 2017 March for Science on the Washington Mall. He kickstarted a magnetic molecule-making kit called Snatoms, which exceeded its funding goal in the first hour, sold 10,000 units, and is now available on Amazon.

Muller completed a degree in Engineering Physics from Queen's University in Canada, and a Ph.D. in physics education research at the University of Sydney. His thesis topic was 'Designing Effective Multimedia for Physics Education'.