L
- (Locarno District) Loco
- (Lugano District) Laghetto
- (Lugano District) Lisora
- (Lugano District) Luccio
- (Lugano District) Lembro
- (Mendrisio District) Lentano
- (Mendrisio District) La Grassa
- (Mendrisio District) Loasa
- (Mendrisio District) Lattecaldo
- (Mendrisio District) Loi
- (Mendrisio District) La Ca
- (Mendrisio District) Laghetto
- (Locarno District) Lovald
- (Lugano District) Lanera
- (Lugano District) Lelgio
- (Leventina District) Lavorgo
- (Blenio District) Leontica
- (Lugano District) Lopagno
- (Leventina District) Lurengo
- (Lugano District) Lamone
- (Locarno District) Lionza
- (Lugano District) Lugaggia
- (Vallemaggia District) Linescio
- (Blenio District) Largario
- (Lugano District) La Costa
- (Lugano District) Lisone
- (Locarno District) Luserte
- (Locarno District) Lubie
- (Lugano District) Leguè
- (Lugano District) Luera