| Ahmad Tajuddin Malay: {{Script|Arab|أحمد تاج الدين | |
| Sultan of Kedah | |
| Succession: | Sultan of Kedah |
| Reign: | 1854 - 1879 |
| Predecessor: | Zainal Rashid Al-Mu'adzam Shah I |
| Successor: | Zainal Rashid Mu'adzam Shah II |
| Issue: | Zainal Rashid Mu'adzam Shah II Abdul Hamid Halim Shah |
| House: | Mahawangsa |
| Father: | Zainal Rashid Al-Mu'adzam Shah I |
| Mother: | Wan Maheran binti Wan Muhammad Sadiq |
| Birth Date: | 1852 |
| Death Date: | 22 June 1879 (aged 27) |
| Place Of Burial: | Langgar Royal Mausoleum |
| Religion: | Sunni Islam |
Paduka Sri Sultan Ahmad Tajuddin Mukarram Shah ibni Almarhum Sultan Zainal Rashid Al-Mu'adzam Shah I (Jawi: Malay: ڤدوك سري سلطان أحمد تاج الدين مكرم شاه ابن المرحوم سلطان زين الراشد المعظم شاه ١; 1852 – 22 June 1879) was the 24th Sultan of Kedah and reigned from 1854 to 1879. During his rule that the new Balai Nobat consisting of a five-story building was built. The building was built of wood with zinc roofing.