While studying, Björgólfur Thor took a variety of vacation jobs, including managing events at Reykjavík's two biggest clubs: Tunglið and Skuggabarinn. As a result, in 1991, he met Kristín Ólafsdóttir, now a film-maker; they married in 2010. They have three children, Daniel (b. 2005), Lorenz (b. 2009), and Bentina (b. 2011). They currently live primarily in London, United Kingdom.
In 1991, Björgólfur Thor went to Russia along with his father and a friend, Magnús Þorsteinsson. The Icelandic businessmen, together with Russian partners, founded the bottling company Baltic Bottling Plant, which they sold to Pepsi. Next they founded a brewing company, originally called ООО "Торговый дом "РОСА" and eventually registered as Bravo International JSC by December 1997. Six companies registered in Limassol, Cyprus were responsible for establishing Bravo and Björgólfur Thor was president of all of them. Bravo Brewery became the fastest-growing brewery in Russia at the time, primarily through the production of the premium beer Botchkarov. Heineken bought the brewery for $325m in 2002.