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A life tenure or lifetime tenure is a term of office that lasts for the office holder's lifetime, unless the office holder is removed from office under extraordinary circumstances. Judges and certain members of some senates or upper chambers (senator for life) most commonly have life tenure. The primary goal of life tenure is to insulate the officeholder from external pressures.

United States federal judges have life tenure once appointed by the President and confirmed by the Senate.

Senior professors may also be granted tenure in this sense.