Zeitlin (Yiddish: צייטלין) is a matronymic Jewish surname.
When transliterated from Yiddish to Russian to English, the surname may be spelled as follows.
Male forms: Tseytlin, Tseitlin, Tsetlin, Tzeitlin.
Female forms (usually only for Slavic nationals): Tseytlina, Tseitlina, Tsetlina, Tzeitlina.
When transliterated via Polish, the surname may be spelled as Cejtlin, Cajtlin, Zejtlin, Zajtlin.