Walther von der Vogelweide, German poet (c. 1170 - c. 1230)

Carl Ferdinand Wilhelm Walther (1811–1887), German-American Lutheran theologian

Johann Gottfried Walther (1684–1748), German organist and composer

Walther arms - German manufacturer of arms

Walter Engines a.s. - Czech manufacturer of aero-engines.

Hellmuth Walter Kommanditgesellschaft (HWK) - German manufacturer of rocket engines during WWII

Walther is a German male name meaning "powerful warrior" or "ruler of the world", from Old High German „waltan“ (to rule) and „heri“ (Army), similar to Harald. When used as a given name, the h is mostly dropped, especially in English. The h is silent in German.

Waltharius of the Waltharilied (9th century poem), about Visigoth Prince Walter of Aquitaine

Bernhard Walther, 15th-century German astronomer, referent of the eponymous lunar crater "Walther" (not to be confused with the tiny lunar crater "Walter")

Carl Walther, of Walther arms