The World Association of Theoretical and Computational Chemists (WATOC) aims to promote the field of theoretical and computational chemistry and to advance the interactions between scientists working in this field worldwide.

WATOC holds triennial Congresses to promote scientific exchange.

The next congress will be WATOC 2025, to be held in Oslo from 22-27 June 2025 and is organised by Prof. Trygve Helgaker. The WATOC 2028 congress will be held in Merida, Mexico and will be organised by Profs. Gabriel Merino and Annia Galano. The previous Congress (WATOC2020) was held in Vancouver, Canada on July 3 - 8, 2022.

Current WATOC officers
President: Peter M. W. Gill
Vice-President: Martin Head-Gordon
Treasurer: Peter R. Schreiner
Auditor: Yitzhak Apeloig
Communications Officer: Henry Rzepa

WATOC awards two types of medals to honor outstanding theoretical and computational chemists: the Schrödinger medal to senior scientists, and the Dirac medal to scientists under the age of 40.

Gustavo Scuseria won the 2024 Schrödinger Medal.
Alexander Sokolov won the 2024 Dirac Medal.

Jan Martin won the 2023 Schrödinger Medal.
Thomas Jagau won the 2023 Dirac Medal.

Frank Neese won the 2022 Schrödinger Medal.
Katharina Boguslawski won the 2022 Dirac Medal.

Yitzhak Apeloig won the 2021 Schrödinger Medal.
Edit Matyus won the 2021 Dirac Medal.

Martin Head-Gordon won the 2020 Schrödinger Medal.
Alexandre Tkatchenko won the 2020 Dirac Medal.