Roy Ngerng Yi Ling (Chinese: ???; pinyin: YÃn YìlÃn; born May 9, 1981), better known as Roy Ngerng, is a Taiwan-based Singaporean activist and blogger.
Ngerng was a prominent opposition figure and politician in Singapore before his move to Taiwan in late 2016.
Ngerng started his sociopolitical blog, The Heart Truths, in 2012.
He was found liable in October 2014 of defaming Lee Hsien Loong, the Prime Minister of Singapore, in a blog post.
Ngerng is also noted for his protests at Hong Lim Park campaigning against Singapore's Central Provident Fund.
As a result of the events surrounding him, Ngerng was ranked by Yahoo Singapore as the top Singapore newsmaker of 2014.