- Lisle Community Band
- Literacy DuPage
- Literacy in Action-DuPage
- Little City Foundation
- Little Friends, Inc.
- Lizzadro Museum of Lapidary Art
- Loaves & Fishes Community Services
- Lombard Historical Society
- Lombard/Villa Park Food Pantry
- LOVE Christian Clearinghouse
- Lutheran Child & Family Services of Illinois
- Lutheran Social Services of Illinois
- Mandala South Asian Performing Arts
- Maple Street Chapel Preservation Society, Inc.
- Marklund
- Mayslake Village
- Mercy Housing Lakefront
- Metropolitan Asian Family Services
- Metropolitan Family Services DuPage
- Midwest Shelter for Homeless Veterans, Inc.
- The Morton Arboretum
- Music Institute of Chicago
- My Child's Live Matters
- NAMI DuPage
- Naper Settlement
- Naperville Area Humane Society
- Naperville Area Recycling Center
- Naperville Art League
- Naperville Cares
- Naperville Chorus
- Naperville Community Television
- Naperville Elderly Homes, Inc.
- Naperville Men's Glee Club
- Naperville Park District
- National Louis University
- Neighborhood Food Pantries
- New World Repertory Theater
- North Central College
- Northeast DuPage Family and Youth Services
- Northeast DuPage Special Recreation Association
- Northern Illinois Food Bank
- Northwestern Memorial Foundation - Marianjoy
