Krojanker, Kroyanker, Krojanski, Krojansky, Krajenski, Krajensky, Krajeski are toponymic surnames ("-er": Germain/Yiddish, "-ski": Polish, "-sky": transliterated Polish) derived from the German name Krojanke or Polish name of the location Krajenka.^[1] 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