Capri started her career as a child Actress, appearing on such series as Father Knows Best, The Danny Thomas Show, The Adventures of Rin Tin Tin and a recurring role as Edie Westrope on The George Burns and Gracie Allen Show in 1958. She made her film debut at the age of thirteen in Outlaw's Son. She appeared thereafter in more films and television series, including roles in two CBS westerns in 1959, as Dolly Cleary in "The Littlest Client" on Wanted: Dead or Alive, starring Steve McQueen, and as Debbie McCallin in "McCallin's Daughter" on Trackdown, with Robert Culp.
In 1962, she was cast in a recurring role as Mary Rose in the ABC/Warner Brothers sitcom, Room for One More. She appeared on other ABC/WB series, including Maverick, Sugarfoot, Cheyenne, Bronco, 77 Sunset Strip.
In 1967 she appeared as Cpl. Terry Cahill in Season 3, Episode 17 "The Hunters and the Killers" of Twelve O'Clock High
In 1971, Capri played Linda Perry in two episodes of ABC's crime drama Dan August, starring Burt Reynolds. In 1972, she was cast in the film Payday, with Rip Torn in the lead role as a country music singer in Alabama. From the 1970s she used the spelling Ahna Capri in order to reflect the correct pronunciation of her first name.
On August 9, 2010, Capri was involved in a car accident in which a 5-ton truck collided with her car. After eleven days in a coma and on life support, she died on August 19 at the age of sixty-six.
