Ramanlal Pitambardas Soni (25 January 1908 – 20 September 2006), also known by his pen name Sudamo, was a children's writer, translator, and social worker from Gujarat, India. He authored primarily in Gujarati language. He was born on 25 January 1908 in Kokapur near Modasa in north Gujarat. He completed his school education in Modasa. In 1940, he completed a BA from Agra University. He came back to Modasa and joined Modasa high school as a principal. He left a job in 1945 to be involved in social work. He went to Yerwada Central Jail during satyagraha movement in 1932 where he learned Bengali language. Later, he served as a member of the legislative assembly of Bombay state from 1952 to 1957. He was married to Rasikbala Soni and had three children. Dr Shriram, Jayram and Pratima. Doctor by profession, his eldest son Shriram is married to anesthesiologist and renowned Gujarati-Odiya translator Dr Renuka Soni. He died on 20 September 2006 at Ahmedabad.