Sylvia Jane Kirby (born December 9, 1956 in Kokomo, Indiana) is an American country music and country pop singer-songwriter. More commonly known by the singular name Sylvia, she enjoyed crossover music success with the song "Nobody" in 1982.

Although she released several albums starting in the late 1970s, Sylvia is best known for her crossover hit "Nobody", which reached #15 Pop and #1 Country in 1982. The song earned her a gold record certification and a Grammy Award nomination for Best Female Country Vocal Performance (the Grammy went to Juice Newton for her hit "Break It to Me Gently"). Although "Nobody" was Sylvia's only single to reach the Billboard pop charts, her other big country hits include "Drifter" (#1 Country, 1981), "Fallin' in Love", "Tumbleweed" and "Snapshot". In 1982, she was named Female Vocalist of the Year by the Academy of Country Music. She is also credited with making the first "concept" music video clip to air on Country Music Television (CMT), with "The Matador".