The Trio Foundation of St. Louis is a family foundation based in St. Louis, Missouri. The Foundation was founded in 1990 by Dorothy Ross Moog with the intention of involving her three grown children in common philanthropic endeavors. She also felt strongly about sharing the success that she and her husband Hubert "Hub" C. Moog achieved through Hub's leadership at Moog Industries, an automotive manufacturing business.
Mrs. Moog herself was never directly involved in the Foundation, and instead put together a team of decision-makers that include her children, a daughter-in-law and niece. Throughout its history, the family has honored Mrs. Moog's vision for the Foundation by collectively making grants that demonstrate a commitment to causes and organizations that help people and society.