Prafulla Chandra Chaki // ⓘ (Bengali: প্রফুল্ল চাকী, Prafulla Chaki alias Dinesh Chandra Roy) (10 December 1888 – 2 May 1908) was an Indian revolutionary associated with the Jugantar group of revolutionaries who carried out assassination attempt against British colonial official in an attempt to secure Indian independence.

[7] Prafulla Chandra Chaki was born in a well-to-do Jotedar family on 10 December 1888 in Bihar, a village in Bogra district of current day Bangladesh, then a part of Bengal Presidency.

He was expelled from Rangpur Zilla School in Class 9 for taking part in a students' demonstration that violated East Bengal law.

His first assignment was to kill Sir Joseph Bampfylde Fuller (1854-1935), the first Lieutenant Governor of the new province of Eastern Bengal and Assam.

Kingsford, during his previous tenure as the Chief Presidency Magistrate of Calcutta, was unpopular for passing harsh and cruel sentences on young political workers of Bengal.

On the evening of 30 April 1908, the duo was waiting in front of the gate of European Club for Kingsford's carriage to arrive.

[10] Nandalal Banerjee, a police officer travelling in the same compartment grew suspicious of Prafulla and attempted to arrest him on the Mokama railway station platform.