Oliver Vanetta Lynn, Jr. (August 27, 1926 — August 22, 1996), better known as Doolittle Lynn (also Doo and Mooney) was an American talent manager and country music figure, best-known as the husband of country music legend Loretta Lynn. Over the course of their often-tumultuous 50-year marriage, Doolittle was instrumental in developing Lynn's musical talent and country music career, purchasing her first guitar, getting her first radio appearances, and serving as her de facto talent manager for many years.
In addition to his ongoing support for his young wife's career (Loretta wrote in her autobiography Still Woman Enough that Doo "thought I was something special, more special than anyone in the world, and never let me forget it... Doo was my security, my safety net".), Doolittle was also known to be violent, an alcoholic, and a womanizer who was a somewhat reluctant participant in his wife's life as a country music celebrity. Nonetheless, he was a central figure in most of his wife's most successful songs, including "Fist City", "The Pill", "Don't Come Home A-Drinkin' (With Lovin' On Your Mind)", and "You Ain't Woman Enough (To Take My Man)".