ABSTRACT Hendriyanto, 2012, The Analysis of Grammarl Error on English Business Letter by the Sixth Semester Students of English Education Program (TBI) at STAIN Pamekasan Thesis, Tarbiyah Department, English Teaching Learning Program(TBI), the State of Islamic college(STAIN) Pamekasan. Advisor: SitiAzizah, M.Pd. Keywords: Grammatical error, Business letter Some people use the letter to repre…