Joachim Irgens von Westervick (Danish: Joachim Irgens von Westervick; spelled also af Westervig and af Vestervig) (19 May 1611 - 29 August 1675), born as Jochum Jürgens, was a Dano-Norwegian nobleman, a Danish official and an estate owner in Denmark, Norway, and the Netherlands.
The Danish variant of his name by birth was Joachim Irgens.