The study examines the impact of language competencies on attitudes towards doing research projects. Specifically, the study focuses on the impact of first-language competence (Urdu), second-language competence (English), code-switching competence, and bilingual competence on attitudes towards doing research projects among undergraduate students. Employing convenience sampling, a sample of 500 undergraduate students from various disciplines at two public sector universities in Pakistan was selected. The data were collected through a well-structured questionnaire with questions related to language competencies and attitudes towards doing research projects. The hypotheses were tested using SmartPLS-4. The results revealed that first language competence, English language competence, code-switching competence, and bilingual competence have a significant and positive impact on attitudes towards doing research projects. The findings suggest that language competencies play an important role in shaping students' attitudes towards doing research projects. The study emphasizes the significance of students' language competence in developing positive attitudes towards doing research projects. Practical implications for educators, researchers, and policymakers are also discussed.