JanDekert (1786 – 1861) was a Polish Catholic priest, auxiliary Auxiliary bishop of Warsaw from 1859–1861. He was the son of mayor of Warsaw Jan Dekert
consecrated on 10 July 1859 by Antoni Melchior Fijałkowski, assisted by JanDekert, titular bishop of Halicarnassus, and Henryk Ludwik Plater, titular bishop