Makarios III died unexpectedly, of a heart attack, on August 3, 1977. It has recently emerged that, in order to confirm the cause of death, Makarios' heart had been removed during an autopsy. The heart has since been preserved in his former bedroom in the Archbishopric. He is buried in a tomb on the mountain of Throni, a site he personally chose. The tomb is near Kykkos Monastery, where he served as a novice in the 1920s and 1930s.
At his funeral, held at St. John's Cathedral outside the Archbishopric in Nicosia, 182 dignitaries from 52 countries attended whilst an estimated 250,000 mourners—about half the Greek Cypriot population of the island—filed past the coffin.