Kieseritzy is the surname of several people:
Gustav Kieseritzky (1893–1943), highly decorated Vizeadmiral in the German Kriegsmarine during World War II Lionel Kieseritzky (1806–1853), Baltic-German chess master and writer R.K. Kieseritzky (c. 1870 – after 1923), Russian chess master
Also
Boden-Kieseritzky Gambit, chess opening named for Samuel Standridge Boden and Lionel Kieseritzky Kieseritzky Gambit, chess opening named for Lionel Kieseritzky