Idris Shah I of Perak (19 June 1849-14 January 1916) was the 19th Sultan and Yang di-Pertuan of Perak. He succeeded his father-in-law, Sultan Abdullah Muhammad Shah, in 1887 and ruled to his death on 14 January 1916.
The Sultan's rule was marked by Perak joining the Federated Malay States, a federation of four protected states in the Malay Peninsula, including Selangor, Negeri Sembilan and Pahang, established by the British government in 1895, which lasted until 1946.
In March 1900, he opened the Victoria Bridge, a single track railway bridge located in Karai, Perak. It is one of the oldest railway bridges in Malaysia, having been constructed between December 1897 and March 1900 by the Perak State Railway as a crossing over the Perak River to serve the local tin mining industry.
He was succeeded by his eldest son, Sultan Abdul Jalil of Perak.
His full name was His Highness Maulana Paduka Sri Tuanku Sultan Sir Idris Murshid al-Azam Shah Ramatu'llah ibni al-Marhum Raja Bendahara Alang Iskander, Sultan and Yang di-Pertuan of the State of Perak, GCMG, GCVO.