Ronald Cheng is a Hong Kong singer and actor. His filmography includes All's Well End's Well 2009, McDull, Pork Of Music, Just Another Margin, Special ID, The Four, The Four 2, The Four 3, and House of Wolves. Cheng has made notable music contributions, including the singles 答案, 沒聽過的歌 (電影《大樂師.為愛配樂》主題曲), and the popular song 一夥 with Josie Ho and Paul Wong.