Last name Phalguni (Phalguni 
) , throughout the world, is a rare surname. The cognomen Phalguni is characteristic of India, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much more prevalently, Phalguni is the forename as well as the last name.
De, Gupta, Ghosh, Nandi, Mandal, Mahato, Mondal, Mishra, Sardar, Sarkar, Sharma, Barman, Biswas, Pradhan, Haladar, Banerjee, Karmakar, Pramanik, Mukherjee, Chowdhuri, Chatterjee, Chakraborty, Dutta, Panda, Patel, Patra, Sen, Bag, Pal, Ray, Roy, Das, Maji, Saha, Shah, Sing, Mukhopadhyay, Bera, Jana, Manna, Malik, Maiti, Majhi, Mitra, Singh, Bagdi, Bauri, Kumar, Giri, and Bhattacharya