Know Your Power: A Message to America's Daughters is House Speaker Nancy Pelosi's memoir published in 2008. Co-written with New York Times bestselling author and Peabody Award-winning writer Amy Hill Hearth, the book is a personal and political history describing her own youth as the daughter of U.S. Congressman Thomas D'Alesandro, Junior, being a stay-at-home mom, becoming a Democratic organizer in California, running for Congress at 47 and eventually becoming the highest ranking woman in the history of the United States government.  Pelosi also writes about the experiences of other women to serve in Congress and opposition to the presidency and policies of George W. Bush.

The book seeks to impart wisdom and re-enforce self-esteem in women of all ages. The title comes from advice given to her by former Representative Lindy Boggs.