Only eleven actors and actresses in Oscar history have earned both a Best Actor and Best Supporting Actor (or Best Actress and Best Supporting Actress) Oscar nomination in the same year.
1938 (11th) Fay Bainter
Actress – White Banners
Actress in a Supporting Role – Jezebel *
1942 (15th) Teresa Wright
Actress – The Pride of the Yankees
Actress in a Supporting Role – Mrs. Miniver *
1944 (17th) Barry Fitzgerald
Actor – Going My Way
Actor in a Supporting Role – Going My Way * [Note: Rules have since been changed to disallow a double nomination for the same performance.]
1982 (55th) Jessica Lange
Actress in a Leading Role – Frances
Actress in a Supporting Role – Tootsie *
1988 (61st) Sigourney Weaver
Actress in a Leading Role – Gorillas in the Mist
Actress in a Supporting Role – Working Girl
1992 (65th) Al Pacino
Actor in a Leading Role – Scent of a Woman *
Actor in a Supporting Role – Glengarry Glen Ross
1993 (66th) Holly Hunter
Actress in a Leading Role – The Piano *
Actress in a Supporting Role – The Firm
Emma Thompson
Actress in a Leading Role – The Remains of the Day
Actress in a Supporting Role – In the Name of the Father
2002 (75th) Julianne Moore
Actress in a Leading Role – Far from Heaven
Actress in a Supporting Role – The Hours
2004 (77th) Jamie Foxx
Actor in a Leading Role – Ray *
Actor in a Supporting Role – Collateral
2007 (80th) Cate Blanchett
Actress in a Leading Role – Elizabeth: The Golden Age
Actress in a Supporting Role – I’m Not There
* Denotes winner