Cognomen Appu (Appu 
) , in the world, is quite a common surname. The family name Appu is characteristic of Western Asia, particularly United Arab Emirates, where it is quite a common surname, Oman, and Qatar, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in India, United Arab Emirates, and Saudi Arabia. More frequently, Appu is the forename as well as the last name.
Sah, Nadar, Nayak, Yadav, Mandal, Mathew, Sharma, Shetty, Suresh, Aparna, Cavhan, Kuttan, Pandey, Prasad, Pillai, Pujari, Rathod, George, Lamani, Jadhav, Joseph, Thakur, Gupta, Thomas, Pavar, Patil, Ram, Raj, Ray, Rao, Roy, Das, Mani, Ammu, Babu, Khan, Raja, Devi, Jose, John, Nair, Mohan, Singh, Asari, Appus, Kumar, Kutty, Patel, and Chettiyar