See these links for some very long lists of loads of conferences:
https://quantum.info/conf/index.html
https://quantiki.org/calendar-node-field-dates/year/2025
Quantum Thermodynamics 2026
**Aug 10, 2026 - Aug 14, 2026,** Natal, Brazil
https://www.iip.ufrn.br/en/events/quantum-thermodynamics-conference
Quantum Information 2026
21 Jun - 26 Jun 2026, Seefeld, Tyrol, Austria - 950€ Deadline: March 31, 2026 https://ritschgroup.uibk.ac.at/seefeld2026/index.htm
Midsummer Conference on Open Quantum Systems, Decoherence, and the Quantum-to-Classical Crossover
15-18 June 2026**,** Helsinki, Finland
https://www.helsinki.fi/en/conferences/midsummer-conference-open-quantum-systems-decoherence-and-quantum-classical-crossover
Time in Quantum Theory III