The mega event of 'Oscars' was introduced with the objective of honoring the best talents in the film industry. The moment of winning Oscar Awards is a charismatic one. It is that point in the life of an artist, for which he/she craves throughout his career. Amongst the most popular Oscars is that for 'Best Actress in a Leading Role'. Earlier, this category was known as 'Academy Award of Merit for Performance by an Actress'. 

However, from the 49^th awards ceremony, it was renamed and the present name came into being. The award acknowledges the performance of actresses who turn a movie into a blockbuster. Here is the list of the actresses who have won 'Academy Award for Best Actress'.