Maximilian (Max) Franz August von Forckenbeck (23 October 1821 – 26 May 1892) was a German lawyer and liberal politician who served as Mayor of Berlin from 1878 until his death.

His is considered one of the most important mayors of the city because of his prudent governing style during Berlin's rise as the capital of a unified Germany.

In 1858, Forckenbeck joined the newly established Congress of German Economists, an association promoting free trade and economic freedom.

From 1859, he held a seat in the Mohrungen municipal assembly and was elected a member of the liberal faction in the Prussian House of Representatives (Preußisches Abgeordnetenhaus).

After a controversy with traditional liberal deputies around Georg von Vincke, Forckenbeck on 6 June 1861 founded the German Progress Party (Deutsche Fortschrittspartei).

During that time, in 1866–67, Forckenbeck, along with others, founded the National Liberal Party, a right-wing offshoot of the Progressives.