Julius Vorster (29 April 1809, Hamm – 10 October 1876, Cologne) was a German entrepreneur, one of the founders of Chemische Fabrik Kalk, a major German chemical enterprise in Cologne.
After a commercial apprenticeship, he opened a chemical business in Cologne.
On 1 November 1858 Vorster and chemist Hermann Julius Grüneberg, who was a doctoral student at that time, founded Chemische Fabrik Kalk.
Vorster married Wilhelmine Röhrig and they had several children.
This German business-related biographical article is a stub.