We are pleased to present the issue “Biomedical Flow Dynamics.” Biomedical engineering has been globally recognized as an engineering field for biomedical applications. From now, the combination of biomedical engineering with flow dynamics will unravel a new research field for engineering and science in biomedical applications. This transdisciplinary research that combines flow dynamics and biomedical engineering will enable the progress of research pertaining to cells and bodies under the emerging biological, computational simulations, and experimental engineering techniques. Therefore, this special issue tries to cover various research topics. We think that the papers are of great significance to all fields. Moreover, we believe that the researches will directly influence the quality of life. We sincerely appreciate the wonderful opportunity given to us by the JBSE's editorial board members. Furthermore, we would like to express our sincere gratitude to all the authors and reviewers for their excellent contributions and making this special issue fruitful. Finally, we are thankful to the JBSE editorial office for their technical assistance.