K
- (Willisau District) Klünsberg
- (Sursee District) Kirchbühl
- (Sursee District) Kulmerau
- (Willisau District) Kottwil
- (Sursee District) Kaltbach
- (Hochdorf District) Kleinwangeen
- (Lucerne-Land District) Kastanienbaum
- (Entlebuch District) Kröschenbrunnen
- (Lucerne-Land District) Kaiserstuhl
- (Willisau District) Krutzi
- (Entlebuch District) Kohlhütten
- (Hochdorf District) Kramis
- (Hochdorf District) Kriesbühl
- (Willisau District) Kleinlingi
- (Lucerne-Land District) Kellenmatt
- (Entlebuch District) Klungelisei
- (Entlebuch District) Kleinschultenberg
- (Willisau District) Krieshütten
- (Entlebuch District) Killacher
- (Sursee District) Knutwil
- (Lucerne-Land District) Kriens