Back ألفريد كلاينر Arabic آلفرد کلاینر AZB আলফ্রেড ক্লাইনার Bengali/Bangla Alfred Kleiner German آلفرد کلاینر Persian アルフレート・クライナー Japanese 알프레드 클라이너 Korean Alfred Kleiner Portuguese Кляйнер, Альфред Russian Alfred Kleiner Slovak
Alfred Kleiner (24 April 1849 – 3 July 1916) was a Swiss physicist and Professor of Experimental Physics at the University of Zurich. He was Albert Einstein's doctoral advisor or Doktorvater. Initially Einstein's advisor was Heinrich F. Weber. However, they had a major falling out, and Einstein chose to switch to Kleiner.