Viktor Alexander (May 1, 1865 – March 26, 1934) was a well-known Croatian lawyer and public prosecutor in Zagreb,[1] the capital of Croatia.

He was raised with his brother Erich, and half-siblings Artur, Oskar Arthur, Robert Milan, Gizela Grünwald, and Olga Eisner, all from his father's second marriage.

Before and during World War I, Alexander was one of the most influential people in Croatia, thanks to his friendship with Ban Iván Skerlecz.

In 1917, Alexander played an important role in liberating loyal and wrongly charged people from accusations of high treason.

He travelled to Vienna, to have an audience with Charles I of Austria, to whom he submitted a report which showed that the accusations of the Austro-Hungarian central administration in Serbia against many distinguished citizens and political leaders such as Dr. Ivo Frank, Dr. Aleksandar Horvat [hr], Dr. Vladimir Sachs-Petrović, almost all the Croatian population in the Kingdom of Croatia-Slavonia, Military Frontier and Kingdom of Dalmatia, were based upon forged documents about supposed secret espionage in favour of the Kingdom of Serbia.