This research had the purpose of analyzing the linguistic interference of Spanish articles in the use of English articles in third semester students of the Plurilingual Career of the Universidad Central del Ecuador in the academic period October 2017-February 2018. The theoretical framework, in the independent variable exposed the types of interference, the forms and uses of the indeterminate and determinate articles of Spanish that are transferred to English, and the dependent variable described the uses of the determinate and indeterminate articles, and the main interlanguage errors that students go through when making use of the target language. In order to study this phenomenon, a qualitative-quantitative, non-experimental, documentary and descriptive approach was used, as well as a field research with a test applied to students and a script of questions directed to English teachers.