Friedrich Heinrich Hugo Windischmann (13 December 1811 in Aschaffenburg –– 23 August 1861 in Munich) was a German orientalist, exegete and Catholic leader.
In 1842 he was chosen a member of the Royal Bavarian Academy of Sciences and in 1846 became Vicar-General of Munich.
He accompanied Archbishop Reisach to the episcopal conference at Würzburg in 1848, and was with him in Rome when the dogma of the Immaculate Conception was defined in 1854.
When Reisach was created cardinal and took up his residence in Rome, Windischmann became a simple Canon on 27 August 1856.
His defence of the papal and ecclesiastical rights against the frequent encroachments of the State often brought him in conflict with the civil authorities.