| Party Name: | Revolutionary Socialist Party of India (Marxist) |
| Colorcode: | red |
| Secretary: | Babu Divakaran |
| Foundation: | 2005 |
| Split: | Revolutionary Socialist Party of Kerala (Bolshevik) |
| Merged: | Revolutionary Socialist Party |
| Headquarters: | TC 24/113, Panvila, Thycadu, P.O. Thiruvananthapuram, Pin Code-695014[1] |
| Alliance: | United Democratic Front |
Revolutionary Socialist Party of India (Marxist) was a political party in Kerala, India. It was formed by the former Labour Minister of Kerala, Babu Divakaran in 2005. Divakaran broke away from the RSP(B). In 2008 the party merged with the SP. In 2011, Babu Divakaran quit SP and subsequently RSP(M) merged with RSP.