While women have long contributed to and led businesses, it wasn’t until the 20th century that we saw women taking their place alongside men in the working world in greater numbers.

From wartime icon, Rosie the Riveter, to small screen working woman, Carol Brady of the Brady Bunch, women steadily became seen as a critical component of the workforce, today founding and leading many of the most important companies on earth.

And while there’s a long way to go in terms of workplace equality, women entrepreneurs are making their mark on their industries and communities now more than ever. These 20 women entrepreneurs are the ones who are leading the charge—and we think you’ll be inspired by their tremendous impact: