Jan Walter Susskind (1 May 1913 – 25 March 1980) was a Czech-born British conductor, teacher and pianist. He began his career in his native Prague, and fled to Britain when Germany invaded the city in 1939. He worked for substantial periods in Australia and the United States, as a conductor and teacher.
Susskind was born in Prague. His father was a Viennese music critic and his Czech mother was a piano teacher. At the State Conservatorium he studied under the composer Josef Suk, the son-in-law of Dvořák. He later studied conducting under George Szell, and became Szell's assistant at the German Opera, Prague, making his conducting debut there with La traviata; early in his career, he was often known as H. W. Süsskind (H for Hans or Hanuš).
Susskind fled Prague on 13 March 1939, two days before the German invasion. With the help of a British journalist and consular officials, he arrived in Britain as a refugee. He formed the Czech Trio, a chamber ensemble in which he was the pianist. Encouraged by Jan Masaryk, the Czech ambassador in London, the trio obtained many engagements.