Holetschek
Holetschek is a German-language surname, a Germanized version of the Czech surname Holeček. People with that surname include:
Johann Holetschek (1846–1923), Austrian astronomer
Holetschek (crater), a lunar crater named after the astronomer
Olaf Holetschek (1968), German former footballer

German-language surnames
Surnames of Czech origin