The 1st Logic Prizes Contest was organized during UNILOG'2018 (6th World Congress and School in Universal Logic) in Vichy, France, June 16-26, 2018. There was the participation of winners of 9 different countries. All the contestants presented their work during a special session Sunday 24. And it was decided which was the best paper among the 9 by a jury formed by 7 world famous logicians. The winning paper as well as the other ones have been published in a special issue of Logica Universalis (Birkhäuser / Springer Nature) This issue is freely accessible to anybody: https://www.springer.com/birkhauser/mathematics/journal/11787?detailsPage=pr... Jean-Yves Beziau Editor-in-Chief Logica Universalis