Kaiser
Kaiser is a German title meaning emperor, derived from the Roman title of Caesar, as is the Russian title of Czar.
While Kaiser denoted both the rulers of the Holy Roman Empire (962 - 1806) and of the Austrian and Austro-Hungarian Empire (1806 - 1918), in English usage the title is mainly associated with the emperors of the unified German Empire (1871 - 1918).
The Kaisers of the German Empire were:
Kaiser was also an automobile trademark, named for the man who started the company, Henry J. Kaiser: see Kaiser (automobile)
Kaiser Permanente is a health maintenance organization (HMO), also started by Henry J. Kaiser.
Kaiser is also the name of an aluminium company and of a certain type of roll.
