汉斯·克海斯提安‧奥斯特（丹麦语：Hans Christian Ørsted，1777年8月14日－1851年3月9日），是一位丹麦物理学家、化学家和文学家。在物理学领域，他首先发现载流导线的电流会产生作用力于磁针，使磁针改变方向。在化学领域，他发现了铝元素。十九世纪后期，在科学方面的后康德哲学和演进，由于他的写作而更见雏形。他创建了「思想实验」这名词，他也是第一位明确地描述思想实验的现代思想家。

Hans Christian Ørsted (/ˈɜːrstɛd/; Danish: [hans kʰʁæsd̥jan ˈɶɐ̯sd̥ɛð]; often rendered Oersted in English; 14 August 1777 –9 March 1851) was a Danish physicist and chemist who discovered that electric currents create magnetic fields, which was the first connection found between electricity and magnetism. He is still known today for Oersted's Law. He shaped post-Kantian philosophy and advances in science throughout the late 19th century.