Flondor is a Romanian surname. Notable people with the surname include:
Florica Racovitză-Flondor (1897-1983), Romanian composer Gheorghe Flondor (1892–1976), Romanian politician Iancu Flondor (1865–1924), Romanian politician Tudor Flondor (1862-1908), Romanian composer and politician Tudorel Flondor (1929–1952), Romanian chess master