| Religion: | Islam |
| Maulana Sadr-ud-Din | |
| Amir [Head] of the Ahmadiyya community of the Lahore Section | |
| Birth Date: | 21 September 1901 |
| Birth Place: | Lahore, British India |
| Death Place: | Woking, Surrey, England |
| Nationality: | British Pakistani |
| Occupation: | Educator, missionary |
| Movement: | Lahore Ahmadiyya Movement for the Propagation of Islam |
| Notable Works: | German-language translation of the Quran |
Sadr ud-Din (Urdu: {{nq|صدر الدین; died 14–15 November 1971[1]) was a Pakistani cleric who became the first missionary of the Ahmadiyya Anjuman Ishaat-i-Islam Lahore in the Shah Jahan Mosque of Woking in 1922.