Antonino Valsecchi, as secolo Antonio Valsecchi and in Latin Antoninus Valsecchius (25 December 1708 - 15 March 1791) was an Italian Roman Catholic apologist, member of the Dominican order. For thirty years, he was professor of theology at the University of Padua.^[1]

Antonio was born in Verona.^[2][3] He entered a Dominican seminary as a youth, and by 1726 took the name of Antonino.^[4] After studying philosophy and theology in Venice, while residing in the Convent of the Gesuati there he gained a position teaching philosopy.^[4][2] In 1757, he was appointed professor of theology at Padua, a position he held for the remainder of his life.^[4]

In 1760 he was appointed to the Accademia dei Ricovrati. His works not only commented on the Summa Theologiae but also criticized the rising Rationalism of the Enlightenment.^[4]

He died in Padua,^[3] and was buried in the cloister of the monastery attached to Sant'Agostino, Padua.^[2]

• Orazione in morte di Apostolo Zeno, poeta e storico cesareo, Venice, Simone Occhi, 1750; Milano 1751.
• Oratio ad theologiam, Padu, 1758.
• Dei fondamenti della religione e dei fonti dell'empietà, in 3 volumes, Padua, 1765.
  • De las fuentes de la impiedad, 1777 (Spanish publication).
  • Of the Foundations of Religion, and the Fountains of Impiety, 1800 (English publication).
• La religion vincitrice, 2 voll., Padua 1776, 1779.
• La verità della Chiesa cattolica romana dimostrata e difesa, Padua, 1787.
• Panegirici e discorsi, Bassano 1792 (posthumous).
• Prediche quaresimali, Venice, 1792 (posthumous).
• Praelectiones theologicae, Padua, 1805 (posthumous).
• Ritratti o vite letterarie e paralleli di G.J. Rousseau, e del signor di Voltaire, di Obbes, e di Spinosa, e vita di Pietro Bayle, Venice, 1816 (incomplete, published posthumously).