A. B. Walawalkar (27 December 1897 – 23 December 1970) was an Indian railway engineer, epigraphist, and historian. He is regarded as the founder of Konkan Railway. Born on 27 December 1897, he was from the village of in Kudal Taluka of Sindhudurg District in Maharashtra. He belongs to Naik Maratha Samaj of Sindhudurg. Shri Arjun Balwant Walawalkar joined Central India Railway (presently Western Railway) in its Engineering Drawing Department in 1922. In 1952 he published a booklet on Konkan Railway Project. He delivered seminars and wrote many articles in local and national newspapers about this project. Many people criticized Walawalkar, believing the project was not useful.