| OutServe-SLDNEIN 52-1845000 | Human and Civil Rights | DC | $489,839Small | 86.77 |
| Ovarian Cancer Research AllianceEIN 13-3806788 | Health | NY | $10,805,177Mid-sized | 93.28 |
| Overlook FoundationEIN 51-0194054 | Health | NJ | $6,419,341Mid-sized | 84.96 |
| Overtown Youth CenterEIN 65-1048896 | Education | FL | $3,579,226Mid-sized | 88.81 |
| Oxfam AmericaEIN 23-7069110 | International | MA | $91,570,741Large | 83.65 |
| Ozarks Food HarvestEIN 43-1426384 | Human Services | MO | $30,424,252Large | 97.46 |
| P'eylim Lev L'AchimEIN 13-5643666 | Human Services | NY | $4,222,563Mid-sized | 58.16 |
| P.S. ARTSEIN 95-3931147 | Education | CA | $3,563,508Mid-sized | 95.95 |
| Pacific Crest Trail AssociationEIN 33-0051202 | Environment | CA | $3,359,863Small | 81.60 |
| Pacific EnvironmentEIN 94-2628924 | Environment | CA | $1,330,701Small | 86.58 |
| Pacific HouseEIN 06-1144355 | Human Services | CT | $3,388,468Small | 91.58 |
| Pacific Islanders in CommunicationsEIN 99-0293514 | Arts, Culture, Humanities | HI | $1,483,812Small | 79.39 |
| Pacific Justice InstituteEIN 91-1823641 | Human and Civil Rights | CA | $2,058,162Small | 80.41 |
| Pacific Marine Mammal CenterEIN 95-3680896 | Animals | CA | $1,876,899Small | 87.87 |
| Pacific Northwest BalletEIN 91-0897129 | Arts, Culture, Humanities | WA | $25,339,726Large | 90.05 |
| Pacific Research InstituteEIN 94-2528433 | Research and Public Policy | CA | $6,339,545Mid-sized | 79.47 |
| Pacific Science CenterEIN 91-0750867 | Arts, Culture, Humanities | WA | $27,525,639Large | 90.48 |
| Pacific SymphonyEIN 95-3635496 | Arts, Culture, Humanities | CA | $20,980,482Large | 82.32 |
| PADS Lake CountyEIN 36-2948857 | Human Services | IL | $1,908,369Small | 89.02 |
| Page Ahead Children's Literacy ProgramEIN 91-1600084 | Education | WA | $1,021,623Small | 95.97 |
| Page Education FoundationEIN 36-3605013 | Education | MN | $1,300,079Small | 88.72 |
| PAIEIN 52-0812075 | Human and Civil Rights | DC | $9,964,913Mid-sized | 99.18 |
| Pajama ProgramEIN 02-0588068 | Human Services | NY | $5,715,822Mid-sized | 98.13 |
| Paleontological Research InstitutionEIN 15-0554849 | Arts, Culture, Humanities | NY | $2,561,752Small | 78.74 |
| Palestine Children's Relief FundEIN 93-1057665 | International | OH | $6,842,765Mid-sized | 98.23 |
| Palm Beach OperaEIN 59-1060864 | Arts, Culture, Humanities | FL | $4,633,253Mid-sized | 86.79 |
| Palm Beach ZooEIN 59-1259270 | Animals | FL | $9,849,550Mid-sized | 90.68 |
| Palm Springs Art MuseumEIN 95-1809576 | Arts, Culture, Humanities | CA | $12,050,122Mid-sized | 78.26 |
| Palmer Home for ChildrenEIN 64-0334999 | Human Services | MS | $5,942,324Mid-sized | 83.77 |
| Palo Alto Partners in EducationEIN 77-0186364 | Education | CA | $6,185,868Mid-sized | 88.98 |
| Panama City Rescue MissionEIN 59-1580961 | Human Services | FL | $1,383,192Small | 66.99 |
| Pancreatic Cancer Action NetworkEIN 33-0841281 | Health | CA | $32,108,869Large | 93.02 |
| Pando InitiativeEIN 48-1093130 | Education | KS | $1,375,496Small | 89.21 |
| Panhandle-Plains Historical MuseumEIN 75-6019872 | Arts, Culture, Humanities | TX | $1,903,823Small | 82.91 |
| Panthera CorporationEIN 20-4668756 | Animals | NY | $12,225,372Mid-sized | 96.87 |
| Paraclete Mission GroupEIN 36-3559944 | Religion | CO | $1,876,429Small | 93.07 |
| Paralyzed Veterans of AmericaEIN 13-1946868 | Human and Civil Rights | DC | $105,443,694Large | 72.57 |
| Paralyzed Veterans of America Wisconsin ChapterEIN 39-1393216 | Human and Civil Rights | WI | $289,314Small | 95.84 |
| Parasol Tahoe Community FoundationEIN 88-0362053 | Community Development | NV | $3,954,727Mid-sized | 92.68 |
| Pardes Institute of Jewish Studies, North AmericaEIN 22-2594099 | Education | NY | $4,631,629Mid-sized | 87.65 |
| Parent Project Muscular DystrophyEIN 31-1405490 | Health | NJ | $9,102,759Mid-sized | 93.98 |
| Parenting Now!EIN 93-0706557 | Human Services | OR | $1,212,644Small | 78.88 |
| Parents Television CouncilEIN 95-4819071 | Human Services | CA | $2,193,488Small | 75.49 |
| Park Avenue ArmoryEIN 13-4086800 | Arts, Culture, Humanities | NY | $25,931,022Large | 91.92 |
| Park City InstituteEIN 87-0513186 | Arts, Culture, Humanities | UT | $3,379,104Small | 71.28 |
| Park PrideEIN 58-1883895 | Environment | GA | $2,703,793Small | 93.91 |
| Park Square Theatre CompanyEIN 41-1280683 | Arts, Culture, Humanities | MN | $3,602,045Mid-sized | 87.96 |
| Parker County Center of HopeEIN 75-2762501 | Human Services | TX | $2,026,410Small | 90.17 |
| Parkinson's FoundationEIN 13-1866796 | Health | NY | $26,963,779Large | 90.88 |
| Parkinson's Institute and Clinical CenterEIN 94-3061594 | Health | CA | $8,641,345Mid-sized | 75.52 |
| Parkinson's Unity WalkEIN 13-3842415 | Health | NJ | $2,602,836Small | 65.64 |
| Partners for Sacred PlacesEIN 23-2560361 | Arts, Culture, Humanities | PA | $1,836,122Small | 78.32 |
| Partners In HealthEIN 04-3567502 | International | MA | $145,464,654Large | 90.94 |
| Partners Relief and DevelopmentEIN 22-3786806 | International | CO | $3,120,225Small | 77.45 |
| Partners WorldwideEIN 38-3293173 | International | MI | $5,299,724Mid-sized | 94.18 |
| Partnership Against Domestic ViolenceEIN 58-1314556 | Human Services | GA | $3,433,146Small | 94.39 |
| Partnership for After School EducationEIN 13-3976066 | Education | NY | $1,598,182Small | 79.17 |
| Partnership for Drug-Free KidsEIN 13-3413627 | Health | NY | $7,484,044Mid-sized | 90.81 |
| Partnership for LearningEIN 91-1550803 | Education | WA | $1,092,211Small | 67.42 |
| Partnership for Public ServiceEIN 06-1540513 | Research and Public Policy | DC | $16,330,799Large | 96.46 |