Katharine Hepburn
I can only think of Barbra Streisand, who won an Oscar as Best Actress in Funny Girl (1968) and Best Song for A Star Is Born (1976).
In 1968 there was a tie in the Best Actress category.Katharine Hepburn won for The Lion in Winter, and Barbra Streisand won for Funny Girl.
Many actresses have won more than one Oscar.Katharine Hepburn won the Oscar for Best Actress four timesLuise Rainer won the Oscar for Best Actress twice.Bette Davis won the Oscar for Best Actress twice.Olivia de Havilland won the Oscar for Best Actress twice.Vivien Leigh won the Oscar for Best Actress twice.Ingrid Bergman won the Oscar for Best Actress twice.Elizabeth Taylor won the Oscar for Best Actress twice.Glenda Jackson won the Oscar for Best Actress twice.Jane Fonda won the Oscar for Best Actress twice.Sally Field won the Oscar for Best Actress twice.Jodie Foster won the Oscar for Best Actress twice.Hilary Swank won the Oscar for Best Actress twice.Helen Hayes won the Oscar for Best Actress and the Oscar for Best Supporting Actress.Ingrid Bergman won the Oscar for Best Actress and the Oscar for Best Supporting Actress.Maggie Smith won the Oscar for Best Actress and the Oscar for Best Supporting Actress.Meryl Streep won the Oscar for Best Actress and the Oscar for Best Supporting Actress.Jessica Lange won the Oscar for Best Actress and the Oscar for Best Supporting Actress.Emma Thompson won the Oscar for Best Actress for Howards End (1992) and an Oscar for Best Screenplay for Sense and Sensibility (1995).Shelley Winters won the Oscar for Best Supporting Actress twice (1959 and 1965).Dianne Wiest won the Oscar for Best Supporting Actress twice (1986 and 1994).
Jack Albertson won the Oscar for Best Actor in a Supporting Role in 1968.
There was a tie: Katharine Hepburn won for her role as Eleanor of Aquitaine in The Lion in Winter and Barbra Streisand won for her role as Fanny Brice in FunnyGirl.
Ruth Gordon won the Oscar for Best Actress in a Supporting Role in 1968.
Katharine Hepburn for Guess who's coming to dinner.
Edith Evans won the Golden Globe for Best Performance by an Actress in a Motion Picture - Drama in 1968 for The Whisperers.
Carol Channing won the Golden Globe for Best Performance by an Actress In A Supporting Role in a Motion Picture in 1968 for Thoroughly Modern Millie.
Jack Albertson won the 1968 Best Supporting Actor award for his performance in "The Subject Was Roses."
1969 for movies released in 1968: Katherine Hepburn and Barbra Streisand.
Barbra Streisand, who won Best Actress for Funny Girl(1968) and the Best Original Song for A Star Is Born (1976). She was the first actress with such an achievement, and the only other actress was Emma Thompson who won Best Actress for Howards End (1992) and Best Adapted Screenplay for Sense and Sensibility (1995).
Barbra Streisand. She won the 1968 Best Actress award (in a tie with Katharine Hepburn) for her performance as Fanny Brice in "Funny Girl." She shared the 1976 Best Original Song Oscar with Paul Williams for "Evergreen" from "A Star Is Born."
Barbra Streisand for Funny Girl (1968).
Oliver! won the Oscar for Directing in 1968.
Oliver! won the Oscar for Sound in 1968.
I can only think of Barbra Streisand, who won an Oscar as Best Actress in Funny Girl (1968) and Best Song for A Star Is Born (1976).