In our constitution, the provisions related to fundamental right are in Part III, from Article 12 to 35, and they are considered as basic human right of citizens of India. There is no single provision for Right to Know anywhere in our Constitution, but still this concept exists in the Indian legal system because it's drive the constitutional validity from Freedom of Speech and Expression under Article 19 Clause (1) Sub Clause (A) and the Supreme Court has made an attempt to fit the Right to Know under Article 19 Clause (1) Sub Clause (A) through its different judgments. Right now, the ambit of the right to know has been much wider as it was interpreted first. It has taken place various aspects specially in the context of environment and ecological balance. This study examines whether the right to know covers within the scope of Article 19(1)(a) of the Constitution of India, which guaranteed the fundamental rights of the citizen’s freedom of speech and expression. The primary objective of this research is to analyses the constitutional ambit of the "right to know" and examine its judicial recognition by the Supreme Court of India. The study further explores the scope and limitations of this right, particularly with regard to access to information, transparency in governance, privacy, and public interest.