The Edna McConnell Clark Foundation (also McConnell Clark Foundation, Clark Foundation, or EMCF) is a New York-based institution that currently focuses on providing opportunities for low-income youth (ages 9–24) in the United States.

The Foundation makes large, long-term investments, frequently in partnership with other funders, in programs with proven outcomes and growth potential to meet the urgent needs of disadvantaged young people.

The foundation previously worked in criminal justice reform,[2][3] systematic school reform,[4] tropical disease research, and child protection.

In 1999, EMCF began to concentrate its resources on economically disadvantaged young people and the organizations that served them.

It now focuses on helping high-performing nonprofits develop business plans, organizational capacity, and evidence of their programs' effectiveness so they can expand their programming.