Oesch
Oesch is a surname of Swiss German origin, being a cognate of the surname Esch, a German habitational surname meaning "ash". Notable people with the surname include:

Karl Lennart Oesch (1892–1978), Finnish general
Tom Oesch (born 1980), Swiss filmmaker

See also
Oesch's die Dritten, a Yodel Volksmusik family group from Switzerland
Eash

German-language surnames
Surnames of German origin