Kathryn Dawn Lang (born November 2, 1961), known by her stage name k.d. lang, is a Canadian pop and country singer-songwriter and occasional actress. Lang has won Juno Awards and Grammy Awards for her musical performances. Her hits include the songs "Constant Craving" and "Miss Chatelaine".

A mezzo-soprano, lang has contributed songs to movie soundtracks and has collaborated with musicians such as Roy Orbison, Tony Bennett, Elton John, the Killers, Anne Murray, Ann Wilson, Karen Carpenter, and Jane Siberry. She performed at the closing ceremony of the 1988 Winter Olympics in Calgary, Alberta, and at the opening ceremony of the 2010 Winter Olympics in Vancouver, British Columbia, where she performed Leonard Cohen's "Hallelujah".

Lang has also been active as an animal rights, gay rights, and Tibetan human rights activist. She is a tantric practitioner of the old school of Tibetan Buddhism.