Benoy Viswam was the Forest Minister in the Government of Kerala. He was earlier elected to the Kerala Legislative Assembly from Nadapuram constituency and served as Member, Estimates Committee; Chairman, Assurance Committee; and was one of the five members of the Constituency Delimitation Committee. He is a senior Communist Party of India (CPI) leader and the president of the Kerala Tourism Development Corporation Employees' Federation.
He entered politics from his school days through All India Students Federation (AISF), as Unit Secretary of AISF in Vaikom Government Boys High School. He also elected as Union Chairman of St. Pauls College, Kalamassery. He was elected as Member of Kerala University Union and Syndicate member of Cochin University of Science and Technology. Later he became State President and All India Secretary of AISF. He also was elected as State Secretary of All India Youth Federation (AIYF). He served as Vice President of World Federation of Democratic youth and also Head of its Asia Pacific Commission. He became a CPI member at the age of 18. He was Member of National Council of CPI during the period 1992–98. He also served as Kerala Agricultural University Senate Member and Director Board Member of KTDC.
He received several prizes in elocution and essay writings in university youth festivals and intercollegiate debates. He won "Ambassador of Friendship Among World Youth Award" instituted by the Young Communist League of the Soviet Union. He also received "Banner of Youth Unity" and diploma awarded by the World Youth Federation.
Binoy is married to Shaila. Shaila works in the Kerala Gramin Bank as on officer at Thiruvananthapuram, Kerala, India. For a short spell she was with Nottingham University as a creative writer. Both Binoy Viswam and Shaila are the children of two prominent Communist Party leaders. Binoy Viswam is the son of C.K.Viswanathan who was a leader of the Communist Party of India. He was the Asst Secretary of its State Committee and is a well known campaigner and strategist. Shaila is the daughter of Koothattukulam Mary, a party leader turned teacher.
The couple have two daughters, Rasmi & Surya. Rasmi is working in The Hindu and is married to Shamsudeen who works in Deshabimani. Surya is a law graduate from Colombia University and married to a lawyer.