Sultan Idris first married, Raja Noor Izah binti Raja Ali. She was styled Raja Puan Besar until their divorce 14 years later. He then married his first cousin once removed Raja Muzwin, the daughter of Raja Ariff Shah bin Raja Harun, on 12 August 1943. Idris's grandfather, Sultan Idris Shah I, was Raja Muzwin's great-grandfather. She became known as Raja Perempuan upon Sultan Idris ascending the Perakian throne. Among his children were: •
Raja Nazhatul Shima (born 1952), who is Raja Puan Besar (Crown Princess) of Perak married Raja Muda (Crown Prince) of Perak,
Raja Jaafar ibni Almarhum Raja Muda Musa on 12 January 2019 after her first husband, Syed Omar Alsagoff died in 2017. • Raja Dato' Seri Izzuddin Iskandar Shah (born 1953), married Tengku Datin Seri Noor Hazah (born 1955). •
Raja Iskandar Dzurkarnain (born 1955), who is Raja Di-Hilir, married Tunku Soraya (born 1960), adopted daughter cum matrilineal line niece of
Sultan Abdul Halim of Kedah. • Raja Halimahton Shahrin (1957-2019), drowned at sea while
scuba diving in
Pulau Perhentian,
Besut,
Terengganu. •
Raja Zarith Sofiah (born 1959), who is Permaisuri (Queen Consort) of Johor married Sultan
Ibrahim of Johor. • Raja Jamil Ariffin (born 1962), married Datin Seri Fazilah Hani binti Dato' Harun on 18 February 2021 after his first wife, Tengku Datin Seri Dato' Zalila binti Tengku Kamarulzaman died in 2020. • Raja Radziatul Zahar (born 1965), died during infancy. The Sultan was also claimed to have a son with an Elizabeth Rosa, who was placed for adoption. Keith Williams was raised in
Wales, and in 2015 traced his birth parents for a documentary for
S4C. His grandchildren: • By Raja Nazhatul Shima (Raja Puan Besar of Perak) and Syed Omar Alsagoff: • Syed Saif Alsagoff (born 1973) • Syed Ibrahim Alsagoff (born 1976) • Syed Redzuan Alsagoff (born 1981) • Syed Shareef Alsagoff (born 1983) • Syed Idris Alsagoff (born 1986) • Syed Iskandar Alsagoff (born 1988) • By Raja Dato' Seri Izzuddin Iskandar Shah Al-Haj (born 1953) and Tengku Datin Seri Noor Hazah (born ) daughter of (Tengku Abdul Aziz Shah): • Raja Teh Umi Kalsom (born 26 October 1977) • Raja Muzaffar Idris Shah (born 28 December 1979) • Raja Putra Muhamad Riza (born 13 December 1981) • By Raja Iskandar Dzurkarnain (Raja Di-Hilir of Perak) and Tunku Soraya (Raja Puan Muda of Perak), adopted daughter cum niece of
Sultan Abdul Halim of Kedah: • Raja Nabil Imran (born 1987) • Raja Idris Shah (born 1989) • Raja Sarina Intan Bahiyah (born 1992) • Raja Safia Azizah (born 1996) • Raja Siffudin Muazzam Shah (born 2000) • By
Raja Zarith Sofiah (Queen Consort of Johor) and
Sultan Ibrahim Ismail of Johor: • Tunku Mahkota of Johor (Crown Prince of Johor),
Tunku Ismail Idris (born 1984) • Tunku Tun Aminah Maimunah Iskandariah (born 1986) • Tunku Temenggong of Johor, Tunku Idris (born 1987) • Tunku Laksamana of Johor, Tunku Abdul Jalil (1990-2015) • Tunku Panglima of Johor, Tunku Abdul Rahman Hassanal Jefri (born 1993) • Tunku Putera of Johor, Tunku Abu Bakar (born 2001) • By Raja Jamil Ariffin and Tengku Zalila (princess of the
House of Jamalullail (Perlis)): • Raja Rafiuddin Ariff Shah (born 1992) • Raja Idris Iskandar Shah (born 1995) • Raja Muhammad Hazim Shah (born 2003) His great-grandchildren : • By
Tunku Ismail Idris and Che' Puan Besar Khaleeda: • Tunku Khalsom Aminah Sofiah (born on ) (age ) • Tunku Iskandar Abdul Jalil Abu Bakar Ibrahim (born on ) (age ) • Tunku Abu Bakar Ibrahim (born ) (age ) • Tunku Zahrah Zarith Aziyah (born ) (age ) • By Syed Ibrahim Alsagoff and Suzanna: • Sharifah Nadyatul Iman Alsagoff (born on ) (age ) • Syed Ismail Iman Alsagoff (born on ) (age ) == Honours ==