This books provide a list of bats of Rawalpindi/Islamabad, Pakistan.It includes information on the effects of site, time and light on the activity of urban area of Rawalpindi/Islamabad-Pakistan. The bat activity is affected by the time of the day, area (residential area, Greean belt, buildings,highways, hospitals, railway station and churches etc. The author want to say Thanks to his respectable teachers, Mrs. Bushra Allah Rakha (Supervisor), Dr. M. Rais, Dr. Tariq, Dr. Maqsood Anwar and Dr. Iftikhar Hussain for their kind help and encouragement during the work. The author want to Thanks his fellow workers, Muhammad Hanif, Mr. Sakhawat Ali, Yasir Fiza (post graduate students at the Wildlife Department, PMAS-AAUR), for their help in identification of the bat species and moral support. Zimran Aasi