His daughters Ashley and Wynonna confirmed the news in a statement.
Judd rose to fame as part of country music duo The Judds, in which she performed alongside her daughter Wynonna.
In a statement posted on Instagram, Ashley and Wynonna wrote, “Today we sisters experienced a tragedy.
“We lost our mother-in-law to mental illness.
“We are broken. We navigate deep mourning and know that as we loved her, she was loved by her audience.
“We are in uncharted territory. »
Judd’s career spanned nearly three decades and she received a Grammy for Country Song of the Year with the Judds’ hit Love Can Build A Bridge.
The Judds were due to be inducted into the Country Music Hall of Fame on Sunday and recently announced they would be touring together for the first time in over a decade.
Celebrities pay tribute to Naomi Judd
American actress Kristin Chenoweth paid tribute to Judd on Twitter, she said: “I had the honor of meeting Naomi Judd years ago and she was so incredibly sweet.
“Sending love and prayers to Wynonna, Ashley and the entire Judd family during this time. I never thought she would go.
Judd was born in Kentucky and worked as a nurse before forming the band with her daughter.
Judd’s youngest daughter, Ashley, became an actress, known for her roles in films such as Kiss The Girls, Double Jeopardy and Heat.
American singer Carrie Underwood sent her love to the Judd family, writing on Twitter: “Country music has lost a true legend… sing with the angels, Naomi!!! We all send prayers for the Judd family today…”
The group has also won nine awards from the Country Music Association and seven awards from the Academy of Country Music.
In 1991, Judd was diagnosed with Hepatitis C. The Judds then announced that the band was going to end.
The mother and daughter duo have won a total of five Grammy Awards for hits such as Why Not Me and Give A Little Love.
American TV host Andy Cohen paid tribute to Judd saying, “I loved Naomi Judd. Among her many talents, she was so much fun, a great storyteller, and a wonderful mind.
Actress Kristen Johnston also expressed her sadness after learning of Judd’s death, tweeting, “I’m so sad for Naomi Judd. She was so sweet, warm and fun, but what I remember best is how proud she was of her daughters, she talked about them all the time. My heart breaks for his family.
In addition to her two daughters, Judd is survived by her second husband Larry Strickland who is also a singer and once sang with Elvis Presley.