Francisco José Ynduráin Muñoz (23 December 1940 – 6 June 2008) was a Spanish theoretical physicist.

While completing his doctoral studies, he was a visiting scientist at CERN and a Teaching Assistant at the University of Zaragoza (Spain).

[3] He was Director of the Department of Theoretical Physics (1974–1977 and 1981–1984), Dean of the Faculty of Science (1975) and Deputy President (1978–1981) of the Autonomous University of Madrid.

In 1997, he published a book discussing UFOs theories, Quién anda ahí?, which won the Golondriz award for smart humor in 1998.

Finally, in 2004 he published a book about science, scientists and history entitled Los desafíos de la ciencia.