László Tisza
Born	July 7, 1907 Budapest, Austro-Hungarian Empire
Died	April 15, 2009(2009-04-15) (aged 101) Cambridge, Massachusetts, U.S.
Alma mater	University of Budapest University of Göttingen Leipzig University
Known for	Microscopic theory of the superfluid component of liquid helium
Awards	Fellow, American Physical Society Fellow, American Academy of Arts and Sciences Guggenheim Fellow
Scientific career
Fields	Theoretical physics Quantum mechanics Thermodynamics
Institutions	Kharkiv Theoretical Physics School Collège de France Massachusetts Institute of Technology
Doctoral students	Martin J. Klein Herbert Callen

László Tisza (July 7, 1907 – April 15, 2009) was a Hungarian-born American physicist who was Professor of Physics Emeritus at MIT. He was a colleague of famed physicists Edward Teller, Lev Landau and Fritz London, and initiated the two-fluid theory of liquid helium.^[1]

In 1941, Tisza immigrated to the United States and joined the faculty at the Massachusetts Institute of Technology. His research areas included theoretical physics and the history and philosophy of science, specifically on the foundation of thermodynamics^[2] and quantum mechanics. He taught at MIT until 1973.

Tisza was the author of the 1966 book, Generalized Thermodynamics. The 1982 publication, Physics as Natural Philosophy: Essays in Honor of László Tisza, was written by Tisza's colleagues and former students in honor of his 75th birthday.

He was a Fellow of The American Physical Society and American Academy of Arts and Sciences, a John Simon Guggenheim Fellow and had been a visiting professor at the University of Paris in Sorbonne.

• Vera and Laszlo Tisza House

• MIT site – notice of Tisza's death
• John Simon Guggenheim Fellowship site