Shahidan bin Kassim (Jawi: شهيدان بن قاسم; born 17 June 1951) is a Malaysian politician who has served as the Member of Parliament (MP) for Arau from August 1986 to April 1995 and again since May 2013.

He is also the longest serving Menteri Besar of Perlis and the older brother of Ismail Kassim, former MP for Arau and former MLA for Tambun Tulang.

[4] His tenure as Chief Minister came to an end in March 2008, when Md Isa Sabu, a fellow member of Barisan Nasional, was appointed to the post by Raja Sirajuddin of Perlis after a general election in which UMNO retained its majority in the State Assembly.

[6] Shahidan left the Perlis Executive Council (a body akin to a Cabinet), sitting out the 2008–13 State Assembly term as a backbencher and criticising Md Isa's leadership.

[11] In 1992, he received international coverage for his criticism of what he cited as the criminal acts of Sultan Iskandar of Johor and his son Tunku Ibrahim Ismail.

In 2010 he arranged for a group of young Salafi clerics, including Fathul Bari Mat Jahya, to join UMNO to boost the party's standing with conservative Muslim voters.

[16] The victim from Arau, Perlis, wrote in her police report that she was told by her teacher that the former minister had wanted to see her after he saw her perform with a band at Stadium Tuanku Syed Putra.

[17] After full police investigation, Shahidan was charged with molesting the underage girl at the Sessions Court, Kangar on 12 November 2018.

[18] On 24 April 2019, Shahidan was given a discharge not amounting to an acquittal by the Kangar Sessions Court for the allegation of molesting of an underage girl after the victim retracted her report.