Prof George Francis FitzGerald FRS FRSE (3 August 1851 – 22 February 1901) was an Irish academic and physicist who served as Erasmus Smith’s Professor of Natural and Experimental Philosophy at Trinity College Dublin (TCD) from 1881 to 1901.
FitzGerald is known for his work in electromagnetic theory and for the Lorentz–FitzGerald contraction, which became an integral part of Albert Einstein’s special theory of relativity. A crater on the far side of the Moon is named after him, as is a building at TCD.