| Kinship UnitedEIN 36-4395095 | International | IL | $4,086,912Mid-sized | 89.39 |
| Kips Bay Boys & Girls ClubEIN 13-1623850 | Human Services | NY | $10,133,079Mid-sized | 90.39 |
| Kishwaukee Family YMCAEIN 36-2379643 | Human Services | IL | $3,529,997Mid-sized | 82.77 |
| Kiwanis Children's FundEIN 36-6072039 | International | IN | $6,836,127Mid-sized | 90.54 |
| Knoxville Zoological GardensEIN 62-1034633 | Animals | TN | $11,148,856Mid-sized | 86.00 |
| KNPBEIN 88-0172215 | Arts, Culture, Humanities | NV | $4,049,715Mid-sized | 89.18 |
| Kohl Children's Museum of Greater ChicagoEIN 36-3706878 | Arts, Culture, Humanities | IL | $4,802,705Mid-sized | 86.88 |
| Kolel Chibas JerusalemEIN 13-5655181 | Human Services | NY | $5,312,170Mid-sized | 65.97 |
| Kolel Shomre Hachomos of JerusalemEIN 13-5562271 | Human Services | NY | $8,897,808Mid-sized | 59.57 |
| KSBJ Educational FoundationEIN 74-2162248 | Religion | TX | $11,508,571Mid-sized | 90.60 |
| KVIEEIN 94-1421463 | Arts, Culture, Humanities | CA | $10,941,160Mid-sized | 86.34 |
| La Comunidad Hispana (LCH)EIN 23-2041915 | Health | PA | $5,092,573Mid-sized | 99.95 |
| La Jolla Music SocietyEIN 23-7148171 | Arts, Culture, Humanities | CA | $4,368,421Mid-sized | 85.59 |
| LA Promise FundEIN 20-4562686 | Education | CA | $5,769,247Mid-sized | 93.65 |
| Lackey ClinicEIN 54-1850915 | Health | VA | $9,322,438Mid-sized | 91.31 |
| Lakeview PantryEIN 36-2734184 | Human Services | IL | $5,200,543Mid-sized | 87.11 |
| LAND studioEIN 34-1212421 | Environment | OH | $3,900,114Mid-sized | 86.27 |
| LandesaEIN 91-1158970 | International | WA | $12,473,980Mid-sized | 94.59 |
| Langham PartnershipEIN 23-7417198 | Religion | AZ | $4,124,812Mid-sized | 81.10 |
| Las Vegas Rescue MissionEIN 23-7222330 | Human Services | NV | $5,012,654Mid-sized | 82.74 |
| Latin American AssociationEIN 58-1237316 | Human Services | GA | $3,759,451Mid-sized | 91.05 |
| Laura's HouseEIN 33-0621826 | Human Services | CA | $3,677,412Mid-sized | 91.77 |
| Lauritzen GardensEIN 47-0659701 | Environment | NE | $6,507,988Mid-sized | 84.42 |
| Lawrence Family Jewish Community Center, Jacobs Family CampusEIN 95-1985444 | Human Services | CA | $12,171,345Mid-sized | 90.46 |
| Lawyers' Committee for Civil Rights Under LawEIN 52-0799246 | Human and Civil Rights | DC | $7,241,908Mid-sized | 87.31 |
| Lazarus HouseEIN 04-2755382 | Human Services | MA | $8,732,769Mid-sized | 88.94 |
| Leadership Conference Education FundEIN 23-7026895 | Human and Civil Rights | DC | $11,075,584Mid-sized | 90.72 |
| League of American OrchestrasEIN 23-7300636 | Arts, Culture, Humanities | NY | $7,061,267Mid-sized | 90.36 |
| Legal Action Center of the City of New YorkEIN 13-2756320 | Human and Civil Rights | NY | $5,209,211Mid-sized | 86.67 |
| Legal Aid Justice CenterEIN 54-0884513 | Human and Civil Rights | VA | $4,804,687Mid-sized | 76.65 |
| Legal Aid of Western MissouriEIN 43-0824638 | Human and Civil Rights | MO | $8,725,119Mid-sized | 85.86 |
| Legal Aid Society of ClevelandEIN 34-0866026 | Human and Civil Rights | OH | $7,921,882Mid-sized | 94.05 |
| Legal Aid Society of the District of ColumbiaEIN 53-0196600 | Human and Civil Rights | DC | $5,594,783Mid-sized | 99.46 |
| Lensic Performing Arts CenterEIN 85-0448396 | Arts, Culture, Humanities | NM | $3,804,951Mid-sized | 90.46 |
| Lesbian, Gay, Bisexual & Transgender Community CenterEIN 13-3217805 | Human and Civil Rights | NY | $11,272,823Mid-sized | 90.68 |
| Level Playing Field InstituteEIN 91-2088635 | Education | CA | $5,201,047Mid-sized | 79.21 |
| Lewis Ginter Botanical GardenEIN 54-1273467 | Environment | VA | $8,265,053Mid-sized | 95.14 |
| Lexington Humane SocietyEIN 61-0444762 | Animals | KY | $3,623,048Mid-sized | 93.10 |
| Liberty Hill FoundationEIN 51-0181191 | Community Development | CA | $8,848,390Mid-sized | 92.75 |
| Library Foundation of Los AngelesEIN 95-4368250 | Arts, Culture, Humanities | CA | $6,805,193Mid-sized | 94.18 |
| Life for Relief and DevelopmentEIN 95-4402149 | International | MI | $10,068,604Mid-sized | 87.25 |
| Lifeline Christian MissionEIN 31-0999791 | Religion | OH | $8,238,442Mid-sized | 87.05 |
| Lifewater InternationalEIN 95-3987142 | International | CA | $4,367,208Mid-sized | 92.49 |
| LifeWireEIN 91-1190193 | Human Services | WA | $3,673,126Mid-sized | 91.39 |
| LIFTEIN 52-2168409 | Human Services | DC | $5,586,830Mid-sized | 79.56 |
| Light of Life Rescue MissionEIN 25-1056389 | Human Services | PA | $6,393,424Mid-sized | 90.12 |
| LightHouse for the Blind and Visually ImpairedEIN 94-1415317 | Human Services | CA | $12,324,154Mid-sized | 95.17 |
| Lighthouse Ministries, FloridaEIN 59-1722768 | Human Services | FL | $3,656,333Mid-sized | 85.85 |
| Linn Benton Food ShareEIN 93-1099406 | Human Services | OR | $8,991,492Mid-sized | 93.49 |
| Literacy Coalition of Palm Beach CountyEIN 65-0169781 | Education | FL | $4,764,772Mid-sized | 91.91 |
| Little Kids RockEIN 94-3396568 | Education | NJ | $5,555,404Mid-sized | 89.88 |
| Little Sisters of the Assumption Family Health ServiceEIN 13-2867881 | Human Services | NY | $4,959,509Mid-sized | 86.04 |
| Little Sisters of the Poor at St. Martin's BaltimoreEIN 52-0715244 | Human Services | MD | $7,179,367Mid-sized | 77.26 |
| Little Sisters of the Poor of IndianapolisEIN 35-1007734 | Human Services | IN | $6,639,356Mid-sized | 77.89 |
| Little Sisters of the Poor of PittsburghEIN 25-0974310 | Human Services | PA | $7,719,894Mid-sized | 85.58 |
| Little Sisters of the Poor of Washington, DCEIN 53-0227542 | Human Services | DC | $9,711,423Mid-sized | 81.54 |
| Livermore Valley Performing Arts CenterEIN 68-0419182 | Arts, Culture, Humanities | CA | $3,917,776Mid-sized | 90.54 |
| LiveWell ColoradoEIN 26-2464764 | Research and Public Policy | CO | $4,006,804Mid-sized | 86.84 |
| Living Beyond Breast CancerEIN 23-2734689 | Health | PA | $4,561,647Mid-sized | 96.12 |
| Living Classrooms FoundationEIN 52-1369524 | Education | MD | $9,077,404Mid-sized | 90.20 |