Deputy Prime Ministers

This is a broad catch-all category for people who served as a vice premier or deputy head of government.

A deputy prime minister or vice prime minister is, in some countries, a government minister who can take the position of acting head of government when the incumbent head of government is temporarily absent. The position is often likened to that of a vice president, although it is not a perfect analogy. Not every deputy prime minister is in the line of succession to the prime minister in the way a vice president may in the line of succession to a president. Moreover, not every deputy prime minister or vice premier is necessarily a "number two" office. The Deputy Prime Minister of the United Kingdom, for example, is not a permanent postion, and exists at the pleasure of the prime minister.  There have been nine people to hold that office since 1942, with substantial gaps of time in between when the office was not used.  On the other hand, the Vice Minister-President of the Netherlands, usually referred to in English as the Deputy Prime Minister, is a permanent position, and has seen a consistent uninterrupted chain of office-holders since 1945, and can act in the incumbent Prime Minister's stead if necessary.  

It's also not unheard of for a country to have several vice premiers or deputy heads of government. The Soviet Union made use of several vice premiers, and the People's Republic of China also used this model.

Countries with sufficient representation should be given their own subcategories.