List of Famous people born on January 23rd

Izak (Ieke) Moerdijk is a Dutch mathematician who in 2012 won the Spinoza prize.

Guy Gallopin is a French former professional racing cyclist. He rode in five editions of the Tour de France and three editions of the Vuelta a España. His brothers Alain and Joël and his nephew Tony were also professional cyclists.

Marco Antônio de Lima Ruas is a Brazilian retired mixed martial arts fighter, Brazilian Submission Wrestler and instructor. Ruas was the UFC 7 Tournament Champion, and also competed for PRIDE Fighting Championships and the IFL.

George B. Crist is a retired four-star general of the United States Marine Corps and was the first Marine to be designated as a Unified Commander — serving as Commander in Chief, United States Central Command from 1985 to 1988

Margaret Mary Murnane is Distinguished Professor of Physics at the University of Colorado at Boulder, having moved there in 1999, with past positions at the University of Michigan and Washington State University. She is currently Director of the STROBE NSF Science and Technology Center, and is among the foremost active researchers in laser science and technology. Her interests and research contributions span topics including atomic, molecular, and optical physics, nanoscience, laser technology, materials and chemical dynamics, plasma physics, and imaging science. Her work has earned her multiple awards including the prestigious MacArthur Fellowship award in 2000, the Frederic Ives Medal/Quinn Prize in 2017, the highest award of The Optical Society, and the 2021 Benjamin Franklin Medal in Physics.