This book chapter is published open access.
It is surprising how many hundreds of postage stamps from around the world have featured mathematics and its history. For the 8ECM meeting in Portorož I was invited to present a public lecture on those stamps that are related to European mathematics, and I illustrated it with more than 200 examples. I also designed a stamp exhibition for the Congress, also including over 200 mathematical stamps with historical commentary. In this article I present a selection of the stamps that I selected for this lecture and exhibition. The treatment is historical and is presented chronologically.