Book excerpt: This issue of Otolaryngologic Clinics, guest edited by Drs. Sarah K. Wise, Ashkan Monfared, and Nicole C. Schmitt is devoted to Biologics in Otolaryngology. This issue is one of six selected each year by our series consulting editor, Dr. Sujana S. Chandrasekhar. Articles in this issue include: Biologics in otolaryngology overview, Current evidence for biologic therapy in chronic rhinosinusitis with nasal polyposis, Choosing the right patient for biologic therapy in CRSwNP, Knowledge gaps and research needs for biologic therapy in rhinology practice, Mechanisms and practical use of biologic therapies for allergy and asthma indications, Immunotherapeutic strategies in head and neck cancer, Cetuximab in head and neck cancer, Anti-PD-1 immune checkpoint blockade for head and neck cancer, Advances in adoptive cell therapy for head and neck cancer, Biologics for the treatment of recurrent respiratory papillomatosis, Past and future biologics for otologic disorders, Biological treatments for Neurofibromatosis Type II and other skullbase disorders, and Biologics in treatment of autoimmune ear disorders.