Datuk Husam bin Musa (Jawi: حسام بن موسى; born 14 October 1959) is a Malaysian politician who served as Vice-President of the National Trust Party (AMANAH), a component party of the Pakatan Harapan (PH) coalition, who is currently leading the federal government and Senator from September 2018 to September 2021.

Husam's early career included a stint as Harakah journalist in 1985 and in 1990–1993 he was the Press Secretary to the Menteri Besar of Kelantan Dato' Nik Abdul Aziz Nik Mat.

His tenure as Member of Parliament gave him the prominence as a very capable politician in Malaysia and he received the accolade as "Newsmaker of the Year 2003" (malaysiakini.com) for his tenacity to bring up issues of public interest.

Beside contesting and winning the Salor state seat in the 2013 Malaysian general election, he also contested the parliamentary seat of Putrajaya but had lost to Barisan Nasional's Tengku Adnan Mansor.

[4] Husam was earlier conferred the Dato' Paduka Jiwa Mahkota Kelantan award which carries the title Dato' when he was an exco in 2006 by the previous Sultan Ismail Petra of Kelantan but the award was revoked by his son, Sultan Muhammad V in February 2018.