波希米亚（捷克语：Čechy；波兰语：Czechy；德语：Böhmen；拉丁语：Bohemia）是古中欧地名，占据了古捷克地区西部三分之二的区域。现在位于包括布拉格在内的捷克共和国中西部地区。广义上，尤其是有关波希米亚王国的历史文献中，也常指代包括摩拉维亚和捷克西里西亚在内的整个捷克地区。波希米亚是古中欧国家，曾为神圣罗马帝国中的一个王国，随后成为奥地利哈布斯堡王朝的一个省。波希米亚曾经南临奥地利，西抵巴伐利亚，北接萨克森和卢萨蒂亚，东北与西里西亚为邻，并与东部的摩拉维亚接壤。1918年至1939年以及1945年至1992年，波希米亚属于捷克斯洛伐克的一部分，1993年之后成为组成捷克共和国的主要部分之一。

Bohemia (Czech:Čechy; German:  Böhmen ; Polish:Czechy; French:Bohême; Latin:Bohemia) is a region in the Czech Republic. In a broader meaning, it often refers to the entire Czech territory, including Moravia and Czech Silesia, especially in historical contexts: the lands of the Bohemian Crown. Bohemia was a kingdom in the Holy Roman Empire and subsequently a province in the Habsburgs’ Austrian Empire. It was bounded on the south by Upper and Lower Austria, on the west by Bavaria, on the north by Saxony and Lusatia, on the northeast by Silesia, and on the east by Moravia. From 1918 to 1939 and from 1945 to 1992 it was part of Czechoslovakia; and, since 1993, it has formed much of the Czech Republic.