List of oldest companies: Before 1300
The oldest name on this list that stood out to me is Weihenstephan brewery, founded in 1040 in Bavaria, Germany. They have some of the finest lagers I have ever tried. If you enjoy crisp, refreshing lager beers, I highly recommend their beers. My favorite one is probably the Weihenstephaner Hefeweissbier, followed by the Hefeweissbier Dunkel.Note: I am not affiliated in any way with the company, I just highly enjoy their beers.