Walther (German: [ˈvaltɐ]) is a masculine given name and a surname.

It is a German form of Walter, which is derived from the Old High German Walthari, containing the elements wald -"power", "brightness" or "forest" and hari -"warrior".

The name was first popularized by the famous epic German hero Walther von Aquitaine and later with the Minnesänger Walther von der Vogelweide.