Kosach
Kossatsch is the family name of the following people:
- Laryssa Petrivna Kossatsch (1871–1913), Ukrainian poet, dramaturge and translator, see Lesja Ukrajinka
- Olha Kosach-Krywynjuk (1877–1945), Ukrainian writer, literary critic, translator, teacher, bibliographer, ethnographer and doctor
- Olha Petriwna Kossatsch (1849–1930), Ukrainian writer, journalist and ethnologist, see Olena Ptschilka
- Petro Kossatsch (1842–1909), State Councilor, lawyer, educator and philanthropist