The European Conference on Queueing Theory (ECQT) is now a consolidated tradition for the members of the queueing theory community in Europe and abroad. After the three past editions (Ghent, Belgium in 2014; Toulouse, France in 2016; Jerusalem, Israel in 2018), in 2026 the conference will be organized in Reykjavík, Iceland. ECQT continues the Madrid Conferences on Queueing Theory (MCQT), organized by Jesús Artalejo. Discipline scientifique :