The ISTH 2023 Congress will take place in Montreal, Quebec, Canada. More details about hotels and travel will be available in late 2022.

Visa Notice: If you are planning to attend the ISTH 2023 Congress, and you live in a country that requires a visa for entry to Canada, please do not wait to apply for your visa. Wait times for visas to Canada can exceed more than 150 days in some cases. Particularly if you are a resident of the following countries, please apply early for your visa: Algeria, Argentina, Brazil, Colombia, Egypt, Iraq, Israel, Nigeria, Romania, Saudi Arabia, South Africa, Thailand, or Turkey. Other countries also have extended wait times, so don't wait. You can learn more here. The Immigration, Refugees and Citizenship Canada Special Event Code for this event is: 23ISTH. If you need a letter of invitation, please email us at