Ioan Lazăr Kalinderu (born Calenderoglu, also known as Iancu Kalinderu, Ioan Kelenderu, Ioanŭ Calenderu, or Jean Kalindéro; December 28 or 29, 1840 – December 11, 1913) was a Wallachian, later Romanian jurist and confidant of King Carol I, who served for thirty years as the administrator of crown domains, and for three years as president of the Romanian Academy. Educated in France, he was the son of a rich and influential Greek-Romanian banker, Lazăr Kalenderoglu, and the brother of physician Nicolae Kalinderu. Like them, he was a sympathizer of the National Liberal Party, with which he debuted in politics in the 1880s.