Klajn
Klajn is a family name for the following people:
- Stana Đurić-Klajn (1905 (greg.) - 1986), Yugoslav musicologist and pianist
- Hugo Klajn (1894–1981), Yugoslav psychoanalyst and theater director
- Ivan Klajn (* 1937), Serbian linguist, philologist and linguistic historian
- Mihajlo Klajn (1912–1941), Croatian agronomist and communist
Note: Klajn is the Serbo-Croatian spelling of small.