On behalf of the Councilors of the International HLA and Immunogenetics Workshop (IHIWS) we are calling for submissions of proposals and bids for the organization of the 19th International Histocompatibility and Immunogenetics Workshop (IHIWS). The proposals must include the constitution of the organizing committee and the location of the workshop. It has been customary that there are one or two chairpersons of the IHIWS organizing committee and they must be councilors or are well-recognized scientists who have actively participated in past workshops and are supported by at least one councilors. All bids must include the location, dates and goals for the 19th International Workshop. Submission of bids can be submitted online at the 18th IHIWS website by February 1, 2022.