Krojanker, Kroyanker, Krojanski, Krojansky, Krajenski, Krajensky, Krajeski are toponymic surnames ("-er": Germain/Yiddish, "-ski": Polish, "-sky": transliterated Polish) derived from the German name Krojanke for Polish locations Krajanka or Krajenka.Jewish Family Names and Their Origins: An Etymological Dictionary, 1992, , p. 434 Notable people with the surnames include:
David Kroyanker (born 1939), Israeli architect and architectural historian Thomas C. Krajeski (born 1950), American diplomat
Fictional characters Ambassador Krajensky from Star Trek, e.g., in Dominion
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