Henry Abraham Wassenbergh (Hattem, Gelderland, 16 August 1924 - 1 February 2014), known to his friends and colleagues as "Or" Wassenbergh, was a Dutch academic, professor of law, and writer.
Wassenbergh earned a law degree from the University of Amsterdam in 1950.
He studied international law at the Sorbonne and at the Institute of Higher International Studies in Paris, France; and continued his studies in the Netherlands, earning a doctorate from the University of Leiden in 1957.