* The scope of awards considered: Do we include only major awards like Tony Awards or also regional and local awards?
* The time period considered: Do we look at the entire history of theater or a specific period?
* The definition of "single role": Do we consider revivals of the same play as the same role?
Some strong contenders:
* Bernadette Peters won three Tony Awards for her performance as the Witch in the 1988 revival of "Into the Woods."
* Julie Harris won three Tony Awards for her performance as Emily Dickinson in the 1958 play "The Lark."
* Audra McDonald holds the record for the most Tony Awards won by an individual performer (six) and has won multiple awards for different roles.
Other notable actresses with multiple awards for single roles:
* Glenn Close won two Tony Awards for her performance as Norma Desmond in "Sunset Boulevard."
* Helen Mirren won two Tony Awards for her performance as Queen Elizabeth II in "The Audience."
* Angela Lansbury won five Tony Awards for various roles, including two for her performance as Mrs. Lovett in "Sweeney Todd."
Ultimately, it's impossible to say definitively which actress has the most awards for a single role without more specific criteria. However, the actresses listed above are all highly regarded performers with impressive achievements in the theater world.