The school library at Dyal Singh Public School, Sector 7, Karnal, is an essential resource for the students and staff. It provides a wide range of books, journals, and reference materials to support the academic and intellectual growth of its students. The library aims to foster a love for reading and learning, offering a quiet space for study and research. It also plays a key role in promoting creativity, critical thinking, and knowledge-building among students, complementing the curriculum with additional learning resources. The collection is regularly updated to keep pace with evolving educational needs. The library also organizes various activities, including reading sessions and book exhibitions, to encourage student engagement.

Dyal Singh Public School has a spacious library well stocked with about 15,000 books with the number increasing with each passing year. The library has sections ranging from text books and reference books to fiction and general knowledge. There are a variety of books available for students of all levels on various subjects, literature, travel etc. the school subscribes newspapers and magazines to enable students to gain knowledge and develop interest in reading. The students are encouraged to read good books to widen their interests and extend their mental horizon. Around 30 weekly and monthly magazines and 3 English and 2 Hindi Newspapers are available. The young scholars can refer to this storehouse of knowledge to cater for their intellectual pursuits.