Margo Smith (born Betty Lou Miller; April 9, 1942 in Dayton, Ohio) is an American country and Christian music singer–songwriter. She had several years of country success during the 1970s, which included two number one hits on the Billboard Hot Country Songs chart. In the 1990s, she transitioned towards the Christian market and issued two successful albums. She is also known for her yodeling vocal skills and is often referred to as "The Tennessee Yodeler".