Stamatios (Tom) Mike Krimizis (Greek: Σταμάτιος Κριμιζής; born September 10, 1938) is a Greek-American scientist in space exploration.

He continued his education at the University of Iowa, where he received a Master of Science in 1963 and a Ph.D. in 1965 in Physics under the mentorship of renowned space scientist James Van Allen.

[3][4] He holds the Chair of Science of Space at the Academy of Athens, Greece,[2][5] and serves as the President of the Greek National Council for Research and Technology.

[1][4] Krimigis has designed, built, flown and analyzed data from 21 instruments in various NASA and European Space Agency missions.

As a researcher, Krimigis has published nearly 600 articles in scientific journals and books, including ground-breaking findings on solar observations, planetary magnetospheres, and the charged particles that flood the space between the planets.