
This is a list of Australian chief justices by time in office.

This is a list of presidents of Brazil by time in office. The basis of the list is the difference between dates. Since the Proclamation of the Republic in 1889, there have been 38 presidencies and 36 presidents, as Getúlio Vargas and Ranieri Mazzilli served non-consecutive terms. Of the individuals elected president, one was impeached, four resigned and three never took office, while several others died while in office. Carlos Luz spent the shortest time in office, and Getúlio Vargas spent the longest. All presidents listed, including the ones that did not take office, are present in the official list.

This article is a list of the prime ministers of Canada by their time in office. The list starts with Confederation on July 1, 1867, and the first prime minister, Sir John A. Macdonald. It includes all prime ministers since then, up to the current prime minister, Justin Trudeau, the twenty-third person to hold the office, since November 4, 2015.

The following is a list of presidents of France sorted by length of tenure.

This is a list of chancellors of Germany by time in office from 1867 to 2021, including the Federal Republic of Germany and its predecessors. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater. Bismarck's successive tenure as Chancellor of the North German Confederation (1867–1871) and of the German Empire (1871–1890) is counted as one continuous term; Müller and Marx's double terms are treated as single, continuous tenures.

This list of prime ministers of Hungary lists each Prime Minister in order of term length. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater.

This list of presidents of Italy lists each president in order of term length. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater.

This list of prime ministers of Italy lists each Prime Minister in order of term length. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater.

This is a list of presidents of South Korea by time in office. The basis of the list is the difference between dates; if counted by number of calendar days all the figures would be one greater.

This is a list of Portuguese prime ministers by time in office.

This is a list of presidents of Romania by time in office. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater.

This is a list of prime ministers of Spain by time in office. The basis of the list is the inclusive number of days from being sworn in until leaving office.
The tables below show information and statistics about the members of the Swiss Federal Council, or Federal Councilors.

This article lists each Prime Minister of the United Kingdom in order of term length. This is based on the difference between dates; if counted by number of calendar days all the figures would be one greater.

The Director of the Federal Bureau of Investigation is the head of the Federal Bureau of Investigation, the United States' primary federal law enforcement agency, and is responsible for its day-to-day operations. The FBI Director is appointed for a single 10-year term by the President of the United States and confirmed by the Senate. The FBI is an agency within the Department of Justice (DOJ), and thus the Director reports to the Attorney General of the United States.

This is a list of presidents of the United States by time in office. The listed number of days is calculated as the difference between dates, which counts the number of calendar days except the last day. The length of a full four-year presidential term of office usually amounts to 1,461 days. If the last day is included, all numbers would be one day more, except Grover Cleveland would have two more days, as he served two non-consecutive terms.