Guar Sanji is a state constituency in Perlis, Malaysia, that has been represented in the Perlis State Legislative Assembly.
The state constituency was created in 1984. It was first contested in 1986 and is mandated to return a single Assemblyman to the Perlis State Legislative Assembly under the first-past-the-post voting system. , the State Assemblyman for Guar Sanji is Mohd Ridzuan Hashim from Parti Islam Se-Malaysia (PAS).
According to the federal gazette issued on 31 October 2022, the Guar Sanji constituency is divided into 6 polling districts.