János Bókai (1822–1884, full name in Hungarian Idosebb Bókai János) was a Hungarian University professor, pediatrician and the director of a children's hospital in Budapest.
He also pioneered rhino-laryngology and the development of laryngoscopy and rhinoscopy.He wrote the anamnesis of Ignaz Semmelweis which played a role in the admission of Semmelweis to an insane asylum.