Robert Saudek (21 April 1880 - 15 April 1935) was a Czech-born graphologist and writer of novels, stories, poems and plays. He had considerable influence on the content and standing of graphology worldwide. He also published numerous articles in many languages in periodicals as diverse as The Listener , Zeitschrift fur Menschenkenntnis and the Journal of Social Psychology. He also founded the professional graphology society in the Netherlands. He also started two academic periodicals: one in Dutch and the other in English. Many graphologists worldwide today use Saudek's work without knowing the origin. He published Experimental Graphology in 1929. Saudek examined the speed in handwriting.

He quantified handwriting by use of a microscope, caliper, pressure board, ruler, protractor and slow-motion pictures. Saudek also attempted to deal with graphological phenomena in terms acceptable to the experimental psychologists.