This is a list of wealthiest charitable foundations worldwide. It consists of the 49 largest charitable foundations, private foundations engaged in philanthropy, and other charitable organizations such as charitable trusts that have disclosed their assets. In many countries, asset disclosure is not legally required or made public.

Only nonprofit foundations are included in this list. Organizations that are part of a larger company are excluded, such as holding companies.

The entries are ordered by the size of the organization's financial endowment. The endowment value is a rounded estimate measured in United States dollars, based on the exchange rates on December 31, 2020. Due to fluctuations in holdings, currency exchange and asset values, this list only represents the valuation of each foundation on a single day.