Vlastimil Hort is a Czechoslovak and later German chess Grandmaster. During the 1960s and 1970s he was one of the world's strongest players and reached the 1977–78 Candidates Tournament for the World Chess Championship, but never qualified for a competition for the actual title.

The 1978 World Chess Championship was played between Anatoly Karpov and Viktor Korchnoi in Baguio, Philippines, from July 18 to October 18, 1978. Karpov won, thereby retaining the title.