We invite you to attend International Society on Thrombosis and Haemostasis (ISTH) 2023 Congress from June 24 to 28, 2023, in Montréal, a friendly, reasonably priced multicultural city with an air of sophistication and excitement. The ISTH Congress is the most important international meeting in the field of thrombosis, hemostasis, and vascular biology. It offers new research, continuing education, and opportunities to make connections with colleagues from around the world. The theme of ISTH 2023 is “Investing in ISTH’s future: Early career investigators.” Early career investigators have been involved in planning the congress and will be spotlighted in various sessions. The 24 Scientific and Standardization Committee sessions will present ongoing work and the latest research on bleeding and thrombotic disorders. Additional congress highlights include presentations by 4 world-renowned plenary speakers, 28 State-of-the-Art sessions, 80 oral communication sessions, hundreds of poster presentations, and the not-to-be-missed late-breaking trials sessions. See you in Montréal—we cannot wait to welcome you!