- United Way of Miami-Dade
- United Way of Mid and South Jefferson County
- United Way of Mid-Maine
- United Way of Midland
- United Way of Midland County
- United Way of Mifflin-Juniata
- United Way of Milford
- United Way of Missoula County
- United Way of Mon Valley
- United Way of Monmouth and Ocean Counties, Inc.
- United Way of Monongalia and Preston Counties
- United Way of Monroe-Lenawee Counties, Inc.
- United Way of Montcalm-Ionia Counties
- United Way of Montgomery County, Inc.
- United Way of Moore County
- United Way of Moore County, Inc.
- United Way of Morgan County
- United Way of Morrow County, Inc.
- United Way of Muscatine
- United Way of Muskingum, Perry, and Morgan Counties
- United Way of Natrona County, Inc.
- United Way of Navarro County
- United Way of Nevada County
- United Way of New Canaan
- United Way of New York City
- United Way of Noble County, Inc.
- United Way of Norman, Inc.
- United Way of North Central Arkansas
- United Way of North Central Florida
- United Way of North Central Mass, Inc.
- United Way of North Central Mississippi
- United Way of Northeast Florida
- United Way of Northeast Georgia
- United Way of Northeast Michigan
- United Way of Northeast Mississippi
- United Way of Northeast Missouri
- United Way of Northeastern Minnesota
- United Way of Northern Arizona
- United Way of Northern California
- United Way of Northern Chautauqua County
- United Way of Northern Nevada and the Sierra
- United Way of Northern New Jersey
- United Way of Northern New Jersey - Somerset County Office
- United Way of Northern New Jersey - Suburban Essex County Office
- United Way of Northern New Jersey - Sussex County Office
- United Way of Northern New Mexico
- United Way of Northern New York
- United Way of Northern Ozaukee County, Inc.
- United Way of Northern Shenandoah Valley
- United Way of Northwest Alabama