Sultan Sir Alaeddin Sulaiman Shah Ibni Almarhum Raja Muda Raja Haji Musa GCMG KCVO (Jawi: سلطان سر علاء الدين سليمان شاه ابن المرحوم راج موسى; 11 September 1863 – 31 March 1938) was the fifth Sultan of Selangor reigning from 1898 to 1938.

[3] However, at the instigation of the British Resident, Theodore Samuel Adams (1885–1961; in office 1935–1937), Tengku Musa Eddin was dismissed as raja muda in 1934 for alleged "misbehaviour".

Adams had accused Tengku Musa Eddin of being a spendthrift and wastrel with a penchant for gambling.

However, many Malays in Selangor believed the real reason for Tengku Musa Eddin's dismissal was his refusal to follow Adams' orders.

Their second son, Tengku Alam Shah became the sixth Sultan of Selangor, and the second Yang di-Pertuan Agong of Malaysia.

He married Tengku Ampuan Raja Zubaidah binti Abdul Jalil of Perak in May 1910, and she became his second royal consort.

He married for the seventh time c. 1910, to Cik Anjung Negara Maimunah binti Abdullah.

He married his eighth wife Cik Puri Negara Bidayah binti Ahmad c. 1912.

In September 1921, he married Tengku Ampuan Paduka Seri Negara Raja Fatimah binti Idris Murshidul Azzam Shah of Perak who became his third royal consort.