Acting Dutch Consul in Kovno, Lithuania, 1940
Zwartendijk was the honorary Dutch Consul in Kovno (Kaunas), Lithuania. He is credited with devising and pioneering the use of the ”Curacao visa” in early July 1940. Along with Sugihara, he issued end visas to the destinations of Curacao and Surinam. He is credited with saving thousands of lives. In 1997, he was awarded the Righteous Among the Nations honor by Yad Vashem.