The winter issue of Croatian Operational Research Review (CRORR) journal – Volume 17, Number 1, 2026 is published. The issue consists of 13 original scientific papers from the area of operational research and related fields, such as data envelopment analysis, multicriteria decision making methods, as well as spatial panel analysis, matching techniques, experimental survey analysis and different mathematical models including linear programming, queuing models, genetic algorithms and graph theory. All scientific papers were sent to at least two independent reviewers for a double blind peer review process.