| Naismith Memorial Basketball Hall of FameEIN 04-6128892 | Arts, Culture, Humanities | MA | $10,289,678Mid-sized | 88.18 |
| NALEO Educational FundEIN 52-1212849 | Research and Public Policy | CA | $8,307,589Mid-sized | 86.84 |
| Nantucket AtheneumEIN 04-2104412 | Arts, Culture, Humanities | MA | $2,737,637Small | 88.11 |
| Nantucket Historical AssociationEIN 04-6003451 | Arts, Culture, Humanities | MA | $5,456,879Mid-sized | 84.34 |
| Naples Botanical GardenEIN 65-0511429 | Environment | FL | $8,405,351Mid-sized | 87.78 |
| Nashua Soup Kitchen & ShelterEIN 02-0359239 | Human Services | NH | $1,391,716Small | 85.31 |
| Nashville Inner City MinistryEIN 62-1274899 | Religion | TN | $1,784,500Small | 81.75 |
| Nashville OperaEIN 62-1119830 | Arts, Culture, Humanities | TN | $2,398,969Small | 80.53 |
| Nashville Public RadioEIN 62-1631652 | Arts, Culture, Humanities | TN | $4,962,835Mid-sized | 87.05 |
| Nashville Public TelevisionEIN 62-1740928 | Arts, Culture, Humanities | TN | $5,583,266Mid-sized | 87.37 |
| Nashville Rescue MissionEIN 45-2424130 | Human Services | TN | $13,880,937Large | 85.23 |
| Nashville SymphonyEIN 62-0550979 | Arts, Culture, Humanities | TN | $25,298,449Large | 89.42 |
| Nassau County Museum of ArtEIN 11-2949583 | Arts, Culture, Humanities | NY | $2,572,437Small | 86.13 |
| National 4-H CouncilEIN 36-2862206 | Human Services | MD | $41,223,591Large | 85.15 |
| National Academy of Engineering FundEIN 23-7284092 | Research and Public Policy | DC | $9,369,619Mid-sized | 80.56 |
| National Advocates for Pregnant WomenEIN 52-2282183 | Human and Civil Rights | NY | $1,175,320Small | 87.61 |
| National Alliance for the Mentally Ill of New York CityEIN 13-3077692 | Health | NY | $1,685,479Small | 87.19 |
| National Anti-Vivisection SocietyEIN 36-2229588 | Animals | IL | $2,699,620Small | 88.55 |
| National Aquarium, BaltimoreEIN 52-1121163 | Animals | MD | $47,928,724Large | 87.87 |
| National Archery in the Schools ProgramEIN 20-1112663 | Education | WI | $3,029,560Small | 89.87 |
| National Archives FoundationEIN 52-1792608 | Arts, Culture, Humanities | DC | $4,613,118Mid-sized | 80.67 |
| National Arts StrategiesEIN 13-3170827 | Arts, Culture, Humanities | VA | $2,266,523Small | 87.97 |
| National Association of Chain Drug Stores FoundationEIN 51-0144922 | Health | VA | $1,241,781Small | 86.19 |
| National Association of Charter School AuthorizersEIN 84-1553195 | Education | IL | $6,522,654Mid-sized | 85.00 |
| National Association of ScholarsEIN 11-2741490 | Education | NY | $1,225,920Small | 89.75 |
| National Black Child Development InstituteEIN 52-0908178 | Human and Civil Rights | MD | $2,257,300Small | 80.87 |
| National Book FoundationEIN 13-3347524 | Arts, Culture, Humanities | NY | $1,481,743Small | 85.46 |
| National Breast Cancer Coalition FundEIN 52-1782065 | Health | DC | $3,232,303Small | 85.46 |
| National Breast Cancer Foundation, Inc.EIN 75-2391148 | Health | TX | $12,307,503Mid-sized | 85.82 |
| National Building MuseumEIN 52-1050999 | Arts, Culture, Humanities | DC | $6,830,990Mid-sized | 80.74 |
| National Bureau of Asian ResearchEIN 91-1444105 | Research and Public Policy | WA | $5,395,449Mid-sized | 81.05 |
| National Center for Law and Economic JusticeEIN 23-7311208 | Human and Civil Rights | NY | $2,121,812Small | 83.20 |
| National Center for Missing & Exploited ChildrenEIN 52-1328557 | Human and Civil Rights | VA | $40,446,536Large | 87.97 |
| National Center for Science EducationEIN 11-2656357 | Education | CA | $1,301,861Small | 81.29 |
| National Center for Transgender EqualityEIN 41-2090291 | Human and Civil Rights | DC | $1,632,740Small | 83.37 |
| National Child Safety CouncilEIN 38-6035290 | Human and Civil Rights | MI | $2,997,607Small | 82.12 |
| National College Access NetworkEIN 31-1793562 | Education | DC | $4,051,455Mid-sized | 88.22 |
| National Committee on United States-China RelationsEIN 13-2566973 | International | NY | $4,818,519Mid-sized | 85.18 |
| National Comprehensive Cancer NetworkEIN 23-2818395 | Health | PA | $26,864,032Large | 87.59 |
| National Constitution CenterEIN 23-2434447 | Arts, Culture, Humanities | PA | $19,805,976Large | 85.69 |
| National Consumers LeagueEIN 53-0242038 | Research and Public Policy | DC | $2,349,962Small | 86.45 |
| National Council of Jewish WomenEIN 13-1641076 | Human and Civil Rights | NY | $5,011,754Mid-sized | 86.53 |
| National Council of the United States, Society of St. Vincent de PaulEIN 13-5562362 | Human Services | MO | $9,243,718Mid-sized | 82.00 |
| National Council on AgingEIN 13-1932384 | Human Services | VA | $52,053,736Large | 88.48 |
| National Cowboy and Western Heritage MuseumEIN 30-0341029 | Arts, Culture, Humanities | OK | $9,895,778Mid-sized | 81.24 |
| National Cyber Security AllianceEIN 02-0629238 | Research and Public Policy | DC | $1,978,769Small | 85.09 |
| National D-Day Memorial FoundationEIN 54-1504679 | Arts, Culture, Humanities | VA | $1,804,904Small | 81.55 |
| National Day of Prayer Task ForceEIN 75-1914068 | Religion | CO | $1,140,148Small | 84.18 |
| National Down Syndrome SocietyEIN 13-2992567 | Health | NY | $2,131,501Small | 87.28 |
| National FFA FoundationEIN 54-6044662 | Human Services | IN | $18,193,311Large | 85.13 |
| National Foundation for Cancer ResearchEIN 04-2531031 | Health | MD | $13,432,400Mid-sized | 82.26 |
| National Fragile X FoundationEIN 84-0960471 | Health | DC | $1,654,106Small | 89.19 |
| National Gallery of ArtEIN 53-6001666 | Arts, Culture, Humanities | DC | $185,897,169Large | 88.54 |
| National Headache FoundationEIN 23-7073022 | Health | IL | $1,347,010Small | 85.59 |
| National High School Rodeo AssociationEIN 46-6015501 | Human Services | CO | $6,130,854Mid-sized | 84.95 |
| National History DayEIN 34-1262642 | Education | MD | $2,875,087Small | 83.95 |
| National Humane Education SocietyEIN 54-0618244 | Animals | WV | $3,613,287Mid-sized | 81.59 |
| National Humanities CenterEIN 59-1735367 | Research and Public Policy | NC | $5,231,657Mid-sized | 88.57 |
| National Inclusion ProjectEIN 20-0146446 | Human Services | NC | $555,374Small | 89.28 |
| National Jewish Outreach ProgramEIN 13-2881809 | Religion | NY | $2,092,186Small | 84.83 |