Sponsor
A sponsor is one (usually a company) who gives cash, goods or services in return for promoting the sponsor's company. There is a distinct difference between sponsorship and philanthropy. A sponsor expects a return on  investment (ROI), usually in the form of advertising. A philanthropist donates something as a charitable contribution. In sports, sponsors compete to advertise in the most popular sports. In India, sponsors all want to be associated with Cricket. It is much harder to find sponsors for other sports.