Lalli is an apocryphal character from Finnish history. According to legend, he killed Bishop Henry on the ice of lake Köyliönjärvi in Finland on January 20, 1156. Lalli is often referred to as the first Finnish freedom fighter.
Lalli may refer to:
- Hardiljeet Singh 'Lalli' (1932 - 2014), Punjabi literary scholar
- Lalli, an apocryphal character from Finnish history
- Lalli, Rapla County, village in Kehtna Parish, Rapla County, Estonia
- Lalli, Tartu County, village in Kambja Parish, Tartu County, Estonia
- Lalli, Saare County, village in Muhu Parish, Saare County, Estonia