Sadruddin Islahi (1917 - 1998) was an Indian Islamic Urdu writer and a close companion of Abul A'la Maududi. He was one of the early members of Jamat e Islami.
Islahi was born in 1917 in Sidha Sultanpur, Azamgarh district, Uttar Pradesh, British India. After early school education, he went to an Islamic school, Madrasatul Islah, to get a degree in religious education in 1937.
Islahi joined Jamat-e-Islami in its early days and remained an active member until his death. He corresponded with Abul A'la Maududi who was mentoring him as a writer.
After completing his education, Islahi started writing articles for different journals. He was also published in the Islamic journal, Tarjuman ul Quran, Hyderabad. When Jamaat-e-Islami Hind asked Abul A'la Maududi to grant his permission for a condensed publication of Tafhim-ul-Quran, he gave his consent only if it was to be done by Sadruddin Islahi.
Islahi died on November 13,1998, in Azamgarh district, Uttar Pradesh.