Konstanty Mikołaj Melchior Maria Radziwiłł is a Polish politician, physician, since 2023 serving as ambassador to Lithuania. He was Poland's Minister of Health from 16 November 2015 to 9 January 2018. He is a former voivode of the Masovian Voivodeship (2019–2023), and member of the Polish Senate and a past president of the Chamber of Physicians and Dentists.

Ministry of Health of the Republic of Poland is one of the Ministries of the Republic of Poland. Its current minister is Izabela Leszczyna.