| Local Initiatives Support CorporationEIN 13-3030229 | Community Development | NY | $146,056,292Large | 89.97 |
| Locks of LoveEIN 65-0755522 | Health | FL | $765,466Small | 90.94 |
| Logan Square Neighborhood AssociationEIN 36-2638491 | Community Development | IL | $2,108,665Small | 74.95 |
| Loggerhead Marinelife CenterEIN 59-2445926 | Animals | FL | $3,719,334Mid-sized | 92.62 |
| LOGOIEIN 59-1209720 | Religion | FL | $675,621Small | 71.41 |
| Lollypop Farm, the Humane Society of Greater RochesterEIN 16-0743047 | Animals | NY | $7,301,943Mid-sized | 95.53 |
| Lone Star Flight MuseumEIN 76-0213778 | Arts, Culture, Humanities | TX | $4,193,643Mid-sized | 83.29 |
| Lone Survivor FoundationEIN 27-1850918 | Human Services | TX | $2,708,821Small | 90.87 |
| Long Beach Museum of ArtEIN 95-2567271 | Arts, Culture, Humanities | CA | $1,612,856Small | 84.90 |
| Long Beach OperaEIN 95-3387074 | Arts, Culture, Humanities | CA | $2,078,167Small | 70.99 |
| Long Beach Rescue MissionEIN 95-2741506 | Human Services | CA | $4,011,416Mid-sized | 83.92 |
| Long Island Alzheimer's FoundationEIN 11-2926958 | Health | NY | $1,489,593Small | 91.39 |
| Long Island CaresEIN 11-2524512 | Human Services | NY | $14,570,325Large | 87.57 |
| Long Island Children's MuseumEIN 11-3035221 | Arts, Culture, Humanities | NY | $4,693,196Mid-sized | 82.81 |
| Long Island Council on Alcoholism & Drug DependenceEIN 11-1833092 | Health | NY | $1,457,603Small | 83.38 |
| Long Now FoundationEIN 68-0384748 | Research and Public Policy | CA | $3,028,507Small | 90.03 |
| Long Wharf TheatreEIN 06-6073063 | Arts, Culture, Humanities | CT | $7,523,171Mid-sized | 86.98 |
| Longmont Humane SocietyEIN 84-0645455 | Animals | CO | $3,777,711Mid-sized | 83.19 |
| Longyear MuseumEIN 04-2203829 | Arts, Culture, Humanities | MA | $3,858,317Mid-sized | 87.55 |
| Los Angeles Alliance for a New EconomyEIN 95-4459427 | Community Development | CA | $4,683,520Mid-sized | 87.82 |
| Los Angeles BalletEIN 20-1819852 | Arts, Culture, Humanities | CA | $2,925,423Small | 76.38 |
| Los Angeles Chamber OrchestraEIN 23-7010825 | Arts, Culture, Humanities | CA | $4,917,365Mid-sized | 88.10 |
| Los Angeles County Museum of ArtEIN 95-2264067 | Arts, Culture, Humanities | CA | $135,966,047Large | 90.69 |
| Los Angeles Master Chorale AssociationEIN 95-2315682 | Arts, Culture, Humanities | CA | $5,610,819Mid-sized | 83.58 |
| Los Angeles MissionEIN 95-3134049 | Human Services | CA | $13,882,445Large | 75.03 |
| Los Angeles Museum of the HolocaustEIN 46-0503824 | Arts, Culture, Humanities | CA | $2,887,434Small | 80.39 |
| Los Angeles Police FoundationEIN 95-4700442 | Human Services | CA | $2,603,734Small | 88.40 |
| Los Angeles Regional Food BankEIN 95-3135649 | Human Services | CA | $92,294,115Large | 91.95 |
| Los Angeles WaterkeeperEIN 95-4444787 | Environment | CA | $1,246,299Small | 82.14 |
| Los Angeles World Affairs CouncilEIN 95-1783788 | International | CA | $1,489,824Small | 88.03 |
| Los Cabos Children's FoundationEIN 20-2882711 | International | MN | $1,026,454Small | 89.11 |
| Lotus HouseEIN 81-0652266 | Human Services | FL | $7,104,050Mid-sized | 93.98 |
| Loudoun Hunger ReliefEIN 54-1591635 | Human Services | VA | $3,260,978Small | 96.00 |
| Louisiana Baptist Children's Home & Family MinistriesEIN 72-6000696 | Human Services | LA | $6,616,544Mid-sized | 73.05 |
| Louisiana Children's MuseumEIN 72-0929068 | Arts, Culture, Humanities | LA | $2,248,572Small | 85.55 |
| Louisiana Philharmonic OrchestraEIN 72-1189023 | Arts, Culture, Humanities | LA | $5,568,310Mid-sized | 86.72 |
| Louisiana Resource Center for EducatorsEIN 58-1704372 | Education | LA | $1,493,374Small | 71.54 |
| Louisiana SPCAEIN 72-0471368 | Animals | LA | $8,212,256Mid-sized | 96.30 |
| Louisiana Symphony AssociationEIN 72-6001959 | Arts, Culture, Humanities | LA | $2,049,050Small | 72.62 |
| Louisville BalletEIN 61-6033779 | Arts, Culture, Humanities | KY | $4,486,519Mid-sized | 88.95 |
| Louisville Central Community CenterEIN 61-0590743 | Human Services | KY | $1,575,467Small | 80.89 |
| Louisville Free Public Library FoundationEIN 61-0969361 | Arts, Culture, Humanities | KY | $3,582,104Mid-sized | 93.15 |
| Louisville OrchestraEIN 61-6000384 | Arts, Culture, Humanities | KY | $6,751,076Mid-sized | 88.89 |
| Louisville Public MediaEIN 61-1259787 | Arts, Culture, Humanities | KY | $6,051,773Mid-sized | 93.37 |
| Louisville Urban LeagueEIN 61-0444771 | Human and Civil Rights | KY | $3,979,281Mid-sized | 93.11 |
| Love A Child, Inc.EIN 59-2672303 | International | FL | $64,009,080Large | 94.28 |
| Love in the Name of ChristEIN 38-2578829 | Human Services | MI | $1,967,779Small | 81.60 |
| Love Without Boundaries FoundationEIN 06-1710161 | International | OK | $2,095,217Small | 90.71 |
| Love Worth FindingEIN 58-1730035 | Religion | TN | $5,564,717Mid-sized | 79.58 |
| Love146EIN 20-1168284 | Human Services | CT | $3,770,196Mid-sized | 86.96 |
| Lovelane Special Needs Horseback Riding ProgramEIN 04-3139666 | Health | MA | $1,169,575Small | 78.97 |
| Loving Grace MinistriesEIN 52-1160024 | Religion | NJ | $1,080,302Small | 69.01 |
| Lowcountry Food BankEIN 57-0751835 | Human Services | SC | $51,794,129Large | 90.42 |
| Lowell ObservatoryEIN 86-0098918 | Research and Public Policy | AZ | $12,648,803Mid-sized | 88.56 |
| Lower Cape Outreach CouncilEIN 04-2864255 | Human Services | MA | $1,191,323Small | 81.54 |
| Lower Manhattan Cultural CouncilEIN 23-7348782 | Arts, Culture, Humanities | NY | $3,660,793Mid-sized | 87.43 |
| Loyalhanna Watershed AssociationEIN 23-7135993 | Environment | PA | $681,889Small | 84.54 |
| Lubbock Area United WayEIN 75-0961812 | Community Development | TX | $5,582,174Mid-sized | 98.93 |
| Lubbock Meals on WheelsEIN 75-1333736 | Human Services | TX | $1,332,605Small | 85.04 |
| Luis Palau AssociationEIN 93-0713827 | Religion | OR | $9,118,819Mid-sized | 83.26 |