Hieronymus, or Jeronymus van Diest, was a Dutch Golden Age seascape painter.

According to Houbraken, a Jeronymus van Diest was good with grisailles and was the teacher of Adriaen van de Venne. This grisaille painter Jeronymus Diest (I) may possibly have been a grandfather of the younger Jeronymus Diest (II); since they are both from the Hague.

According to the RKD this younger Jeronymus Diest (II) was the son of the painter Willem van Diest and the father of the painter Adriaen van Diest who was a follower of Jan van Goyen and Hendrik Dubbels. His known works are all seascapes with various ships at sail.