Lanna may refer to:
- Lanna script, also called Tai Tham
- Lanna, former kingdom in northern Thailand
- the Northern Thai language spoken in the area of the former kingdom
- Lanna (people) an ethnic group of Thailand.
- Lanna, Lekeberg, a locality in Sweden
- Lanna, Värnamo, a locality in Sweden
- Länna (disambiguation), the name of several localities in Sweden
- Salvatore Lanna, a retired Italian footballer and coach.
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