Alexander Bonini (c. 1270 – 1314) was an Italian Franciscan philosopher, who became Minister General of the Order of Friars Minor.
He taught at the University of Paris. A prolific writer, he is now remembered most for his Tractatus de Usuris. It is especially notable for its subtle treatment of the pricing of contracts involving risks; for example it writes of life annuities, 'we see men and women twenty-five years old buying life annuities for a price such that within eight years they will receive their stake back; and although they may live less than those eight years, it is more probable (probabilius) that they will live twice that. Thus the buyer has in his favour what happens more frequently and is more probable.'[1]