January 1760, near Pleistein, Oberpfalz, Bavaria – 8 March 1833, at Ratisbon) was a German prelate of the Catholic Church.
He served there for forty-five years, overseeing the preparation of over 1500 candidates for the priesthood.
In 1830, when the coadjutor Johann Michael Sailer became ordinary of Ratisbon, Wittmann was made his vicar-general; and after Sailer's death he was nominated Bishop of Ratisbon, 1 July 1832, but died before his preconization.
He was buried in the cathedral of Ratisbon, where a monument was erected to his memory by Conrad Eberhard.
His chief literary works are: Wittmann also prepared with Feneberg a translation of the New Testament (Nuremberg, 1808; latest edition, Sulzbach, 1878).