Terenzio, Count Mamiani della Rovere (19 September 1799 – 21 May 1885) was an Italian writer, academic, diplomat and politician, and was committed to the cause of the unification of Italy under the Sardinian monarchy.

[1] He was born in Pesaro in 1799 during the Napoleonic upheaval in territory that had since 1631 belonged to the Papal States, but had earlier in its history been dominated for a time by the clan Della Rovere.

[3] He subsequently retired to Genoa where he worked for Italian unification, was elected deputy in 1856, and in 1860 became minister of education of the Kingdom of Sardinia under Cavour.

In 1863 he was made minister (ambassador) of the recently declared Kingdom of Italy to Greece, and in 1865 to Switzerland, and later senator and councillor of state.

[4] Meanwhile, he had founded at Genoa in 1849 the Academy of Philosophy, and in 1855 had been appointed professor of the history of philosophy at Turin; and he published several volumes, not only on philosophical and social subjects, but of poetry, among them Rinnovamento della filosofia antica italiana (1836), Teoria della Religione e dello slato (1869), Kant e l'ontologia (1879), Religione deli avenire (1880), Di un nuovo diritto europeo (1843, 1857).