Charles Thurstan Holland[a] TD DL FRCS (March 1863 – 16 January 1941) was an English general practitioner in Liverpool who was best known by his pioneering research in the field of radiology.

[3] Along with such names as Heinrich Albers-Schönberg (Germany), Antoine Béclère (France), Etienne Henrard (Belgium), Guido Holzknecht and Robert Kienböck (Austria), Thurstan Holland is considered one of the pioneers in Europe.

[5] Holland took part in the First World War as a Major in the Royal Army Medical Corps, and his abilities as radiologist were invaluable in treating patients with bullets lodged in their bodies.

[2] By the end of the war, a number of proposals on how to measure the intensity of x-rays had been made, but there was little agreement between the various parties concerned.

[6] In 1925 the British Institute of Radiology, under Holland's leadership[7][8] invited delegates from a number of countries to attend the First International Congress on Radiation in London.