On January 15, 2025, the Russian-Brazilian Colloquium on Logical Pluralism was held at the HSE International Laboratory for Logic, Linguistics and Formal Philosophy to mark World Logic Day. This event was part of the joint project ‘Pluralistic Perspectives on Logic and Formal Philosophy,’ implemented by the laboratory and the Centre for Logic, Epistemology and the History of Science at the University of Campinas (Brazil) under the International Academic Cooperation competition.