Ambika Charan Choudhury
 Ambika Charan Choudhury (Assamese: অম্বিকা চৰণ চৌধুৰী) (August 16 1930 – December 4 2011) was a noted Assamese litterateur historian and activist from Bongaigaon in Assam. Popularly he is known as Kamataratna.