The title of this article is The Interference of Acehnesse toward The Use of rnBahasa Indonesia. This writing based on the direct observation toward the rndew speakers of bahasa Indonesia (L2) who first language is Bahasa Aceh (L1). The rnproblem of this study is the occurring of (L1) interferences in (L2). The rnspeakers of (L2) tend to use (L1) are caused as follow: (1) it is influenced by rn…