List of regicides

Rex is usually but not always understood to refer to not just kings, but any type of monarch, which leads to semantic problems of scope.

[1] Other killings, such as the assassination of Archduke Franz Ferdinand, are generally disqualified as "regicides", because this crown prince had not yet taken the throne.

Suicide is generally discounted as well, as are the killings of monarchs' consorts or other relatives, such as that of Empress Elisabeth of Austria in 1898, or Earl Mountbatten in 1979.

As such, it is difficult to make a universally accepted list of what constitutes a regicide.

The following is a list of cases of monarchs in history who were deliberately killed by someone else in some fashion, according to reliable sources.