Eighth note
Achtelik is the family name of the following people:
- Joachim Achtelik (1920–1942), Polish resistance fighter and artist
- Johannes Achtelik (* 1949), German actor, radio play speaker and acting teacher.
- Kirsten Achtelik (* 1978), German sociologist, journalist and author
In another notation:
- Josef Achtélik (1881–1965), German composer, music theorist and teacher.