IWOTA 2023 will bring together leading international experts for an exchange of results and methods, and for tracing the future development in operator theory, complex analysis, harmonic analysis, linear algebra, random matrix theory, mathematical physics, and their applications. In addition to plenary and semi-plenary talks, the conference provides opportunities for all participants (including young researchers) to present their results in invited and contributed sessions, and to interact with other researchers with similar interests and form new collaboration.