Broadway musicals and strong leading ladies walk hand in hand. Since the inception of the Broadway Musical, an actress who can command attention and generate box office revenue through her personality and talents is a sought after commodity. Somewhere along the way, the Broadway Musical Diva emerged and theatre fans became obsessed. I decided to examine each decade of musical theatre (starting with the 1920s) and weigh contributions, reviews, awards, career escalation, and the other je ne sais quois that make an actress unique and decipher who was the most-valuable player of that ten year span. Part of my rules for writing the piece was that no actress could appear on the list more than once, though many of these talented ladies’ careers span several decades. Read on and enjoy. I look forward to your comments and debates.