Jan Fischer may refer to:
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Jan Fischer (politician) (born 1951), former Prime Minister of the Czech Republic
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Jan Fischer (Czech actor) (1921–2011), Czech Jewish actor and theatre director
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Jan Fischer (rower), German rower
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Johann Bernhard Fischer von Erlach (or ''Jan Fischer z Erlachu'', 1656–1723), Austrian architect
{{hndis, Fischer, Jan