Jertih (Jawi: جرتيه) or commonly known as Bandar Jertih is the most populous town in Besut District, Terengganu, Malaysia. It has been represented by Che Mohamad Zulkifly Jusoh since 2022 in Dewan Rakyat (Malaysian House of Representatives).

Jertih contains a hospital called Hospital Besut. It represents the biggest and most important hospital in the Besut District.