Martha Stewart stands behind a wide variety of charities, including the Make-A-Wish Foundation, Dogs Deserve Better and St. Jude Children's Research Hospital.
Academy Award-Winning director Quentin Tarantino supports The Art of Elysium, which is a charity that encourages the art community to volunteer time to children who are battling serious medical conditions.
Country music artist Keith Urban supports many music related charities, including Artists For Peace and Justice, Music for Relief and the Grammy Foundation.
Anchorwoman Diane Sawyer supports Stand Up To Cancer and the United Nations Foundation.
Actor Matt Damon stands behind multiple charities, including Water.org, Ante Up For Africa and Save the Children.
Though he's not typically known for his charity work, Mike Tyson supports sports charities, including the Laureus Sport For Good Foundation.
U2 front man Bono has famously donated his money and time to dozens of charities all over the world, including (RED), UNICEF and MusiCares.
World famous athlete Tony Hawk stands behind several charities, including Athletes For Hope and his own Tony Hawk Foundation.
Michael Stipe, the front man for the band R.E.M. contributes his efforts to PETA, Greenpeace and Music Rising, among other charities.
Along with Angelina Jolie, Brad Pitt is one of the most charitable celebrities with contributions going toward the African Children's Choir, Global Action For Children and the Yele Haiti Foundation.
Kim Kardashian has given support to the Dream Foundation.
Ellen Degeneres is known for her generous nature. The charities she supports include The Humane Society and the Children's Health Fund.
Known for her multiple charitable contributions, Angelina Jolie supports UNICEF, The Jolie-Pitt Foundation and Doctors Without Borders, among others.
Bill Clinton has contributed to dozens of charities, notably the Red Cross and his own Clinton Foundation.
Though he supports numerous charities, Elton John's own Elton John Aids Foundation is a cause that he has publicly stated is close to his heart.
Actress Diane Keaton supports the non-profit Stand Up To Cancer.
Neil Young helped found Farm Aid along with fellow musicians Willie Nelson and John Mellencamp.
Actor Alec Baldwin has supported PETA and FilmAid International as well as several other charities.
The Duchess of Cambridge, better known as Kate Middleton, supports a number of charities and causes, including the National Portrait Gallery, The Art Room, Action on Addiction and East Anglia Children's Hospice. She is also a patron of The Royal Foundation of The Duke and Duchess of Cambridge and Prince Harry, a grant-giving foundation that focuses on the armed forces, young people and conservation.