Ahmadiyya (Arabic: أحمدية‎;Urdu: احمدِیہ) is an Islamic reformist movement founded in British India near the end of the 19th century, originating with the life and teachings of Mirza Ghulam Ahmad (1835–1908), who claimed to have fulfilled the prophecies about the world reformer of the end times, who was to herald the Eschaton as predicted in the traditions of various world religions and bring about the final triumph of Islam as per Islamic prophecy. He claimed that he was the Mujaddid (divine reformer) of the 14th Islamic century, the promised Messiah and Mahdi awaited by Muslims. The adherents of the Ahmadiyya movement are referred to as Ahmadis or Ahmadi Muslims.

Ahmadi thought emphasizes the belief that Islam is the final dispensation for humanity as revealed to Muhammad and the necessity of restoring to it its true essence and pristine form, which had been lost through the centuries. Thus, Ahmadis view themselves as leading the revival and peaceful propagation of Islam. The Ahmadis were among the earliest Muslim communities to arrive in Britain and other Western countries.

Zakir Abdul Karim Naik (Urdu: ذاکر عبدالکریم نائیک; born 18 October 1965) is an Indian public speaker on the subject of Islam and comparative religion. He is the founder and president of the Islamic Research Foundation (IRF), a non-profit organisation that owns the Peace TV channel based in Dubai, UAE. He is sometimes referred to as a televangelist. Before becoming a public speaker, he trained as a doctor. He has written two booklets on Islam and comparative religion. He is regarded as an exponent of the Salafi ideology; he places a strong emphasis on individual scholarship and the rejection of "blind Taqlid", which has led him to repudiate the relevance of sectarian or Madh'hab designations, all the while reaffirming their importance.

Zakir Abdul Karim Naik was born on 18 October 1965 in Mumbai, India. He attended St. Peter's High School in Mumbai. Later he enrolled at Kishinchand Chellaram College, before studying medicine at Topiwala National Medical College and Nair Hospital and later the University of Mumbai, where he obtained a Bachelor of Medicine and Surgery (MBBS). His wife, Farhat Naik, works for the women's section of the IRF.