Shanudrie Priyasad was born in Homagama, Sri Lanka. She is the youngest of three daughters for Dinesh Priyasad and Shirani Priyasad. Shanudrie has two elder sisters Dinakshie Priyasad and Sheshadri Priyasad, who are also actresses in Sri Lankan cinema and television. Her father Dinesh Priyasad is a film director, in Sri Lankan cinema, and her mother Shirani Priyasad is vegan. Shanudrie attended the Royal Institute International School, Colombo for her studies.