The 2023 ICU Beijing aims to bring together professionals and experts from academia, industry, and government in all disciplines of ultrasonics, to exchange the achievements and experiences in physical acoustics, and the existing and emerging applications of ultrasounds in the fields of “Physical Acoustics”, “Biomedical Ultrasound”, “Non-destructive Evaluation”, “Industrial Ultrasound”, “Emerging Fields”, and so on. In the light of the ongoing pandemic of COVID-19, the Organizing Committee has a contingency plan for a hybrid congress that is a mix of in-person and virtual participation. However, the priority for the meeting congress is a face-to-face meeting.