Nguyễn Văn Đài (born 1970 in Khoái Châu District in Hưng Yên Province) is a Vietnamese human rights lawyer, democracy activist and blogger.

Đài was beaten with wooden clubs, had his possessions taken and left stranded on a beach following training and facilitating a human rights forum in Nghe An Province the week before his arrest.

Đài concluded his house arrest in March 2015 but experienced regular police harassment, physical attacks and surveillance.

[7] According to his wife, he was on his way with Truong Van Dung, a Hanoi-based activist, to meet with European Union representatives involved in the bilateral human rights dialogue the previous day.

In December attorney Ha Huy Son submitted the paperwork to be Đài's defense lawyer but was declined by the Ministry of Public Security.

[16] In November 2016, a petition was filed with the UN Working Group on Arbitrary Detention (WGAD) urging it to intervene in the case of Nguyen Van Đài.

[17] As a result, the UNWGAD published an opinion in June 2017 ruling in favour of the petition and calling for the immediate and unconditional release of Nguyen Van Đài.