Jan Baptist Christyn the Younger (c.1635–1707), knight, was a lawyer and author in the Spanish Netherlands.
As a Licentiate of Laws he practised law in the city of Brussels for a number of years, until in 1697 appointed a judge of the Council of Brabant alongside his uncle Libert-François Christyn.
[1] He wrote a number of works on legal matters.
Les délices des Pays-Bas: ou Description géographique et historique des XVII.
provinces belgiques, a historical chorography of the Low Countries first published in 1697, has been attributed to him, but also to another of his uncles, Chancellor Jan Baptist Christyn (I).