The name Einstein means Stone Worker and is of German origin. Einstein is a name that's been primarily used for boys.
The name Einstein is most closely associated with the famous scientist, Albert Einstein. So much so that it has become a nickname for someone who is particularly smart or intelligent.
Einstein is also the name of actor George Clooney's Cocker Spaniel mix dog. In the Back to the Future series, Einstein (often known as "Einie") was Doc Brown's pet sheepdog mix.
Einstein may have been an occupational surname, from the German word einsteinen, which means to enclose or to surround with stone. It may have been given as a surname to masons or stoneworkers.