"Do You Know" is a song by British singer-songwriter Michelle Gayle, released in January 1997 by RCA, BMG and 1st Avenue Records as the first single from the singer's second album, Sensational (1997). The song was co-written by Gayle and received positive reviews from music critics. It peaked at number six on the UK Singles Chart and number two on the UK R&B Singles Chart, making it her second-highest-charting single. The accompanying music video for "Do You Know" was directed by Randee St. Nicholas and filmed in Los Angeles.