| Koahnic Broadcast CorporationEIN 92-0139738 | Arts, Culture, Humanities | AK | $2,479,153Small | 87.62 |
| Koinonia HouseEIN 23-7292636 | Religion | ID | $2,106,344Small | 71.76 |
| Kokomo Rescue MissionEIN 35-1104430 | Human Services | IN | $2,559,798Small | 88.60 |
| Kostopulos Dream FoundationEIN 87-6125177 | Human Services | UT | $1,588,652Small | 100.00 |
| Kōkua Hawaiʻi FoundationEIN 20-0315475 | Education | CA | $727,147Small | 69.49 |
| KSMQEIN 68-0599645 | Arts, Culture, Humanities | MN | $1,940,862Small | 78.12 |
| La Casa de las MadresEIN 94-2330864 | Human Services | CA | $2,590,639Small | 86.81 |
| La Leche League InternationalEIN 36-2514518 | Human Services | NC | $938,688Small | 72.36 |
| Laguna Art MuseumEIN 33-0717157 | Arts, Culture, Humanities | CA | $2,339,192Small | 73.10 |
| Lake Area United WayEIN 23-7170019 | Community Development | IN | $3,382,305Small | 75.74 |
| Lake Erie Nature & Science CenterEIN 34-0845030 | Arts, Culture, Humanities | OH | $1,414,666Small | 92.23 |
| Lakeland Public TelevisionEIN 41-1265701 | Arts, Culture, Humanities | MN | $2,788,423Small | 87.20 |
| Lakeland Volunteers in MedicineEIN 52-2351630 | Health | FL | $1,812,580Small | 81.96 |
| Lakeshore Habitat for HumanityEIN 38-2893355 | Community Development | MI | $2,460,211Small | 88.18 |
| Lakeview Cemetery FoundationEIN 34-1429875 | Arts, Culture, Humanities | OH | $1,539,223Small | 81.69 |
| Lamb & Lion MinistriesEIN 75-1717049 | Religion | TX | $3,036,788Small | 95.95 |
| Lambda LegalEIN 23-7395681 | Human and Civil Rights | NY | $3,373,779Small | 81.46 |
| LancasterHistory.orgEIN 23-1365154 | Arts, Culture, Humanities | PA | $2,255,715Small | 76.17 |
| Land Stewardship ProjectEIN 41-1466054 | Environment | MN | $2,524,386Small | 87.93 |
| Landmark Legal FoundationEIN 51-0203802 | Human and Civil Rights | VA | $1,800,533Small | 69.76 |
| Landmark on Main StreetEIN 11-2444833 | Arts, Culture, Humanities | NY | $1,510,616Small | 91.18 |
| Lange FoundationEIN 95-4407687 | Animals | CA | $1,705,600Small | 96.22 |
| Lantern HouseEIN 87-0368808 | Human Services | UT | $2,766,907Small | 76.66 |
| Last Chance for AnimalsEIN 95-4013155 | Animals | CA | $2,442,653Small | 98.23 |
| Latino Health AccessEIN 33-0562943 | Human Services | CA | $2,557,543Small | 85.02 |
| Latino Policy ForumEIN 36-3676873 | Human and Civil Rights | IL | $1,400,304Small | 82.88 |
| LatinoJustice PRLDEFEIN 13-2722664 | Human and Civil Rights | NY | $2,720,183Small | 85.76 |
| Laumeier Sculpture ParkEIN 43-1131429 | Arts, Culture, Humanities | MO | $1,879,075Small | 73.48 |
| Lausanne Committee for World EvangelizationEIN 33-0901290 | Religion | FL | $1,298,608Small | 73.46 |
| Law Enforcement Education ProgramEIN 38-3385175 | Human Services | MI | $1,443,890Small | 24.35 |
| Law Enforcement Legal Defense FundEIN 52-1095066 | Human and Civil Rights | VA | $1,632,586Small | 87.54 |
| Lawyers Alliance for New YorkEIN 13-2666432 | Human and Civil Rights | NY | $3,003,462Small | 87.33 |
| Leadership MemphisEIN 62-1043517 | Community Development | TN | $1,768,006Small | 92.02 |
| Leadership Resources InternationalEIN 36-2972097 | Religion | IL | $3,155,098Small | 81.87 |
| Leadership RoundtableEIN 54-2174467 | Religion | DC | $2,362,890Small | 80.46 |
| LEADership, Education and DevelopmentEIN 23-2139831 | Education | GA | $695,511Small | 52.72 |
| League for Animal WelfareEIN 31-0818511 | Animals | OH | $1,511,108Small | 93.36 |
| League of American BicyclistsEIN 36-6206225 | Research and Public Policy | DC | $1,587,429Small | 81.45 |
| League of Education Voters FoundationEIN 91-2141507 | Education | WA | $3,258,126Small | 87.56 |
| League of Women Voters Education FundEIN 53-0239013 | Human and Civil Rights | DC | $2,592,235Small | 74.42 |
| League to Save Lake TahoeEIN 94-6128680 | Environment | CA | $2,194,842Small | 85.65 |
| LEAPEIN 22-2906547 | Education | CT | $2,331,529Small | 91.45 |
| Learning LeadersEIN 13-2658549 | Education | NY | $2,267,777Small | 75.59 |
| Leave No Trace Center for Outdoor EthicsEIN 84-1303335 | Environment | CO | $1,905,401Small | 91.90 |
| LeavenEIN 39-1572168 | Human Services | WI | $1,206,416Small | 90.50 |
| Lee Pesky Learning CenterEIN 13-3878574 | Education | ID | $1,453,064Small | 89.87 |
| Leg Up FarmEIN 23-2931834 | Health | PA | $2,724,018Small | 80.10 |
| Legacy Youth Tennis and EducationEIN 23-1747032 | Human Services | PA | $2,880,570Small | 83.24 |
| Legal Aid Society of San Mateo CountyEIN 94-1451894 | Human and Civil Rights | CA | $2,751,433Small | 89.37 |
| Legal Information for Families Today (LIFT)EIN 13-3910567 | Human and Civil Rights | NY | $1,812,443Small | 86.20 |
| Legal MomentumEIN 23-7085442 | Human and Civil Rights | NY | $2,191,015Small | 78.25 |
| Legal OutreachEIN 13-3214627 | Education | NY | $2,609,785Small | 87.22 |
| Legal Services for ChildrenEIN 51-0169463 | Human and Civil Rights | CA | $2,541,488Small | 89.89 |
| Les Turner ALS FoundationEIN 36-2916466 | Health | IL | $2,469,145Small | 85.71 |
| Let's Get ReadyEIN 31-1698832 | Education | NY | $3,468,417Small | 92.03 |
| Leukemia Research FoundationEIN 36-6102182 | Health | IL | $2,490,827Small | 91.93 |
| Levine Museum of the New SouthEIN 56-1748648 | Arts, Culture, Humanities | NC | $2,311,042Small | 83.95 |
| Lewy Body Dementia AssociationEIN 05-0577683 | Health | GA | $1,151,496Small | 89.94 |
| Lexington InstituteEIN 54-1880642 | Research and Public Policy | VA | $2,015,906Small | 70.79 |
| Lexington Rescue MissionEIN 61-1387338 | Human Services | KY | $1,484,168Small | 79.19 |