Savo (Savolax) is the name of a geographical region in Finland which can refer to:

• Savo - a historical Province of Sweden (Historical provinces of Finland)
• Pohjois-Savon maakunta - a current Region of Finland
• Etelä-Savon maakunta - a current Region of Finland
• Eastern Finland - a current Province of Finland
• A dialect of Finnish, the Savo dialect .

It is also an island near Guadalcanal in the Solomon Islands.