ABSTRACT
This study has set to find out "an investigation on the level of phonological interference in the speech of Hausa-English bilingual: A case study of Usmanu Danfodiyo University Sokoto". It was to find out the features that distinguish Hausa accent from the Received Pronunciation. The Recorded speech of ten selected native speakers of Hausa was used. Students who were native speakers of Hausa were sampled. Phonological approach was used using snowball sampling technique. It was discovered that phonological features of Hausa such as substitution, under-differentiation, spelling pronunciation, epenthesis and simplification, of consonant cluster were the common features found in oral English of the samples. The English of the samples has been affected by their L1.