Was Wolfgang Unzicker the last Amateur GM? Wolfgang Unzicker was a German GM, rated about 2550 and worked as a judge. In the sense of holding down a job while playing, he was an "amateur" player. 

So was Unzicker, a GM in the 70's, the last amateur GM?
So in the sense of holding down a job while playing he was an
  "amateur" player.
  
  So was Unzicker, a GM in the 70's, the last amateur GM?


No. Here are 4 current British "amateur" grandmasters.


English GM Matthew Turner is a teacher at Millfield School in Somerset.   
English GM Matthew Sadler is a computer consultant in the Netherlands.   
English GM Luke McShane (currently on 4/7 in the Netanya Masters) is a financial trader in London   
Scottish GM Dr. Jonathan Rowson is Director of the Social Brain Centre at the Royal Society of Arts in London