Nguyễn Văn Hải (born c. 1952; also known as Nguyen Hoang Hai), better known by his pen name Điếu Cày, is a Vietnamese blogger who has been prosecuted by the government of Vietnam for tax evasion and "disseminating anti-state information and materials". His imprisonment was protested by several international human rights organizations, and Amnesty International considers him a prisoner of conscience. On 21 October 2014, he was released and deported to the United States.