In a world where sustainable investment plays an important role in aligning financial interests with broader societal and environmental goals, this thesis investigates the impact of digital literacy and sustainable literacy on financial and accounting students' ability to promote sustainable investments in Sri Lanka. The study aims to identify the most significant literacy factor influencing the promotion of sustainable investments among students and explore the relationship between digital literacy, sustainable literacy and sustainable investment practices. Through a survey-based approach, data was collected from a group of students to assess their proficiency in sustainable literacy and digital literacy, as well as their attitudes towards sustainable investing. The findings reveal a moderate level of sustainable literacy and a relatively higher level of digital literacy among the students, with significant positive relationships between sustainable investing and both literacy types. Regression analysis indicates that sustainable literacy emerges as the most influential factor in promoting sustainable investments among financial and accounting students. The study underscores the importance of knowledge and awareness in driving sustainable investment behavior and offers insights for curriculum development to equip future financial professionals with the necessary skills for sustainable finance. The research contributes to the discussions on sustainable finance education and highlights the critical role of literacy skills in promoting sustainable investment practices among students in Sri Lanka.