New-style (post-1989) Finnish vehicle registration plates, starting with three letters, have no location information, except for those from the Åland islands, which have ÅLAND at the top and start with the letter Å.

Old-style (pre-1989) Finnish vehicle registration plates started with a group of two letters, the first indicating the town or province (Lääni) of registration (followed here by their main towns to aid location):

• Å - Åland Islands (Marienhamm)
• A - Helsinki city
• B - Helsinki city before 1972; Helsinki (Helsingfors) after
• C - Helsinki (Helsingfors)
• E - Turku (Turku / Åbo)
• F - Turku (Turku / Åbo)
• G - Kymi (Kotka)
• H - Häme (Hämeenlinna)
• I - Häme (Hämeenlinna)
• K - Kuopio (Kuopio)
• L - Lapland (Lappi) (Rovaniemi)
• M - Mikkeli (Mikkeli)
• N - Häme (Hämeenlinna) before 1961; no location after
• O - Oulu (Oulu)
• R - Kymi (Kotka)
• S - Pohjois-Karjala (Joensuu)
• T - Turku (Turku / Åbo)
• U - Uusimaa (Helsinki)
• V - Vaasa (Vaasa / Vasa)
• X - Keski-Suomi (Jyväskylä)
• Y - Vaasa (Vaasa / Vasa)
• Z - Uusimaa (Helsinki)