The Speak Mandarin Campaign (SMC; traditional Chinese: 講華語運動; simplified Chinese: 讲华语运动; pinyin: Jiǎng Huáyǔ Yùndòng) is an initiative by the Government of Singapore to encourage the Chinese Singaporean population to speak Standard Mandarin Chinese, one of the four official languages of Singapore. Launched on 7 September 1979 by then Prime Minister Lee Kuan Yew and organised by the Promote Mandarin Council, the SMC has been an annual event promoting the use of Mandarin.