Redstone Strategy Group is a consulting firm that works with nonprofits and non-governmental organizations (NGOs) to develop policy in areas of climate change, poverty, and education. It works with several left-of-center organizations including the William and Flora Hewlett Foundation, the Center for Global Development, ClimateWorks Foundation, the Leona M. and Harry B. Helmsley Charitable Trust, and the Nature Conservancy. ^{[1] [2]}

In January 2023, philanthropic consulting firm Arabella Advisors announced that it had acquired Redstone and that the latter would be acting as a division under the firm. Arabella president and CEO Rick Cruz announced the acquisition by stating, “We are thrilled to announce that we are uniting with Redstone Strategy, extending our ability to support foundation clients as they pursue solutions to social problems through partnerships, impact investing, grantmaking, and more.” ^[3]