Johann Jacob Vitriarius (8 June 1679 - 12 December 1745)[1][2] was a Dutch jurist of German descent.

Johann Jacob Vitrarius was the son of the German jurist Philipp Reinhard Vitriarius, who between 1675 and 1682 taught law at the Geneva Academy.

Eventually, Vitriarius studied law at the same university, earning a doctorate there in 1701 with the thesis Disputio juridica inauguralis de acquisitione rerum originaria.

[1][2] Vitrarius became a professor of law at Heidelberg University in 1706 [2] and was appointed to the law faculty at Utrecht University on 4 June 1708, commencing on 17 September 1708.

[1] Here he took the place of his father, and was equally widely acclaimed, particularly by the German students who at that time often studied at Dutch universities.