Современная мировая психиатрия WPA contribution to the development of the chapter on mental disorders of the ICD-11 The WPA is supporting the World Health Organization (WHO) in the process of development of the chapter on mental disorders of the 11th edition of the International Classifi cation of Diseases (ICD). <...> The WPA Past-President, M. Maj, is a member of the International Advisory Group for the ICD-10 Revision and the chairperson of the Working Group on Mood and Anxiety Disorders. <...> Several WPA offi cers or experts have been appointed as chairpersons or members of ICD-11 Working Groups. <...> The chairpersons include W. Gaebel (Working Group on Psychotic Disorders), P. Tyrer (Working Group on Personality Disorders), L. Salvador-Carulla (Working Group on Intellectual Disabilities), O. Gureje (Working Group on Somatic Distress and Dissociative Disorders), and D. Stein (Working Group on Obsessive-Compulsive and Related Disorders). <...> WPA Member Societies have participated in the WPA/WHO Global Survey of Psychiatrists’ Attitudes Towards Mental Disorders Classifi cation (1), whose results are signifi cantly infl uencing the revision process. <...> Several WPA Member Societies and experts are being or will be involved in ICD-11 fi eld trials and in the various translations/adaptations of the diagnostic system. <...> The WPA is actively contributing to the process of harmonization between the ICD-11 and the DSM-5. <...> World Psychiatry is one of the main channels through which the international psychiatric community is following the ICD-11 development. <...> A special article authored by the ICD-11 International Advisory Group, summarizing the philosophy of the entire process, has been published in the journal (2), as well as the fi rst report of the Working Group on Intellectual Disabilities (3), and many papers relevant to the ICD-11 development (4-30). <...> Several papers produced by the Working Group on Mood WPA contribution to the development of the chapter on mental disorders of the ICD-11 and Anxiety Disorders will be collected in a special supplement to the journal. <...> The WPA-WHO Global Survey of Psychiatrists’ Attitudes Towards Mental Disorders Classifi cation. <...> International Advisory Group for the Revision of ICD-10 Mental and Behavioural Disorders. <...> A conceptual framework for the revision of the ICD-10 classifi cation of mental and behavioural disorders. <...> Intellectual developmental disorders: towards a new name, defi nition and framework for “mental retardation/intellectual <...>