Walter Villadei (born April 29, 1974) is an Italian military officer. He graduated from the Academy of the Italian Air Force in Pozzuoli and holds a master's degree in aerospace engineering from the University of Naples Federico II and a specialization in astronautical engineering from the University of Rome. Although he has never flown in space, he was trained as a cosmonaut in Russia. It is planned for him to fly into space in late 2023 as part of an Axiom Space mission.