Roy Ngerng Yi Ling (traditional Chinese: 鄞義林; simplified Chinese: 鄞义林; pinyin: Yín Yìlín; born 9 May 1981), is a Singaporean blogger and activist. In 2015, Ngerng was found guilty of defaming Prime Minister Lee Hsien Loong. In his blog, he had accused the PM of being a "thief" and criminally misappropriating monies paid by citizens to the state-administered Central Provident Fund. The judge ruled that the accusation is malicious and "one of the gravest that can be made against any individual, let alone a head of government". Ngerng was ordered to pay defamation damages of S$150,000.