A charitable organization is a type of non-profit organization (NPO). It differs from other types of NPOs in that it centers on philanthropic goals (e.g. charitable, educational, religious, or other activities serving the public interest or common good).

The legal definition of charitable organization (and of Charity) varies according to the country and in some instances the region of the country in which the charitable organization operates. The regulation, tax treatment, and the way in which charity law affects charitable organizations also varies.

The definition of charity in Australia is derived through English common law, originally from the Charitable Uses Act 1601, and then through several centuries of case law based upon it. In 2002, the Federal Government establish an inquiry into the definition of a charity. That inquiry proposed that the government should legislate a definition of a charity, based on the principles developed through case law. This resulted in the Charities Bill 2003. The Bill incorporated a number of provisions, such as limitations on charities being involved in political campaigning, which many charities saw as an unwelcome departure from the case law. The government then appointed a Board of the Taxation inquiry to consult with charities on the Bill. As a result of widespread criticism from charities, the Government decided to abandon the Bill.

William Henry "Bill" Gates III (born October 28, 1955 in Seattle, Washington) is an American business magnate, computer programmer and philanthropist. Gates is the former chief executive officer (CEO) and current chairman of Microsoft, the world’s largest personal-computer software company he co-founded with Paul Allen. He is consistently ranked among the world's wealthiest people and was the wealthiest overall from 1995 to 2009, excluding 2008, when he was ranked third; in 2011 he was the wealthiest American and the second wealthiest person. During his career at Microsoft, Gates held the positions of CEO and chief software architect, and remains the largest individual shareholder, with 6.4 percent of the common stock. He has also authored or co-authored several books.

Gates is one of the best-known entrepreneurs of the personal computer revolution. Gates has been criticized for his business tactics, which have been considered anti-competitive, an opinion which has in some cases been upheld by the courts. In the later stages of his career, Gates has pursued a number of philanthropic endeavors, donating large amounts of money to various charitable organizations and scientific research programs through the Bill & Melinda Gates Foundation, established in 2000.