Jacques de Billy (March 18, 1602 – January 14, 1679) was a French Jesuit mathematician. Born in Compiègne, he subsequently entered the Society of Jesus. From 1629 to 1630, Billy taught mathematics at the Jesuit College at Pontà Mousson. He was still studying theology at this time. From 1631 to 1633, Billy taught mathematics at the Jesuit college at Rheims. From 1665 to 1668 he was professor of mathematics at the Jesuit college at Dijon. One of his pupils there was Jacques Ozanam. Billy also taught in Grenoble. He also served as rector of a number of Jesuit Colleges in Châlons-en-Champagne, Langres and in Sens.

Jacques de Billy (Billi) de Prunay was a French patristic scholar, theologian, jurist, linguist, and Benedictine abbot (1535—December 25, 1581).

Jacques de Milly was the 37th Grand Master of the Order of the Knights Hospitaller (since 1454). He died in 1461.

Jacques de Gouy (ca. 1610 – after 1650) was a French Baroque composer of Dutch ancestry. He was acquainted with composers in Parisian music circles of the early 17th century such as Étienne Moulinié and Michel Lambert.

Jacques de Bourbon, Count de Busset (27 April 1912, Paris – 7 May 2001, Paris ) was a French novelist, essayist and politician. He was elected to the Académie française on 4 June 1981. He was a senior member of the House of Bourbon-Busset.

Jacques de Claeuw, or Grieff (May 1623, Dordrecht – 7 November 1694, Leiden ), was a Dutch Golden Age painter.

Jacques De Fence is the eighth studio album by King Creosote, released in 1999.