| Fort Collins Museum of DiscoveryEIN 74-2541265 | Arts, Culture, Humanities | CO | $2,026,046Small | 84.00 |
| Fort Ticonderoga AssociationEIN 14-1440924 | Arts, Culture, Humanities | NY | $3,442,794Small | 94.39 |
| Fort Wayne Philharmonic OrchestraEIN 35-0791163 | Arts, Culture, Humanities | IN | $5,103,728Mid-sized | 95.04 |
| Fort Wayne Public TelevisionEIN 23-7173906 | Arts, Culture, Humanities | IN | $3,193,265Small | 92.97 |
| Fort Wayne Zoological SocietyEIN 35-6068234 | Animals | IN | $10,680,883Mid-sized | 86.61 |
| Fort Wilderness MinistriesEIN 36-2781629 | Religion | WI | $3,128,109Small | 85.50 |
| Fort Worth Symphony OrchestraEIN 75-6004761 | Arts, Culture, Humanities | TX | $12,267,951Mid-sized | 80.43 |
| Fort Worth ZooEIN 75-0991727 | Animals | TX | $22,727,831Large | 85.70 |
| Forty Carrots Family CenterEIN 65-0405988 | Human Services | FL | $2,314,714Small | 92.80 |
| Forward Edge InternationalEIN 91-1646598 | Religion | WA | $2,709,397Small | 87.09 |
| Forward TogetherEIN 94-3311784 | Human Services | CA | $3,809,210Mid-sized | 82.40 |
| Foster & Adoptive Care CoalitionEIN 43-1570225 | Human Services | MO | $3,419,443Small | 94.25 |
| Foster Care to SuccessEIN 52-1238437 | Education | OH | $12,464,978Mid-sized | 88.29 |
| Foundation Fighting BlindnessEIN 23-7135845 | Health | MD | $28,422,374Large | 80.34 |
| Foundation for Contemporary ArtsEIN 13-1978163 | Arts, Culture, Humanities | NY | $1,919,759Small | 88.67 |
| Foundation for Defense of DemocraciesEIN 13-4174402 | Research and Public Policy | DC | $11,705,479Mid-sized | 89.22 |
| Foundation for Economic EducationEIN 13-6006960 | Research and Public Policy | GA | $3,968,619Mid-sized | 82.80 |
| Foundation for End-of-Life CareEIN 65-0943337 | Human Services | FL | $102,705Small | 65.17 |
| Foundation for Financial PlanningEIN 58-1446336 | Community Development | DC | $1,517,085Small | 93.78 |
| Foundation for Individual Rights in EducationEIN 04-3467254 | Human and Civil Rights | PA | $6,787,293Mid-sized | 94.96 |
| Foundation for Lincoln Public SchoolsEIN 36-3490560 | Education | NE | $1,908,628Small | 81.61 |
| Foundation for MetroWestEIN 04-3266789 | Community Development | MA | $2,732,867Small | 85.20 |
| Foundation for National ProgressEIN 94-2282759 | Arts, Culture, Humanities | CA | $13,687,855Large | 80.72 |
| Foundation for Orthopaedic Research and EducationEIN 59-3555349 | Health | FL | $5,052,960Mid-sized | 87.90 |
| Foundation for Physical TherapyEIN 13-6161225 | Health | VA | $2,351,981Small | 84.36 |
| Foundation for Prader-Willi ResearchEIN 31-1763110 | Health | CA | $2,999,798Small | 91.78 |
| Foundation For The CarolinasEIN 56-6047886 | Community Development | NC | $326,772,081Large | 94.34 |
| Foundation for the Mid SouthEIN 72-1151070 | Community Development | MS | $2,079,629Small | 90.19 |
| Foundation for the National Institutes of HealthEIN 52-1986675 | Health | MD | $56,663,813Large | 96.20 |
| Foundation of Orthopedics and Complex Spine, Inc. (FOCOS)EIN 13-4047356 | Health | NY | $3,190,491Small | 81.64 |
| Foundation of Shalom ParkEIN 58-1477833 | Community Development | NC | $3,347,463Small | 79.77 |
| Foundation to Eradicate DuchenneEIN 71-0874241 | Health | VA | $926,691Small | 84.28 |
| Four Bands Community FundEIN 46-0456528 | Community Development | SD | $1,394,016Small | 88.22 |
| Four Corners MinistriesEIN 20-3589685 | Religion | AL | $684,010Small | 88.00 |
| Four Corners School of Outdoor EducationEIN 39-1509336 | Education | UT | $2,473,360Small | 91.67 |
| Four States Christian MissionsEIN 52-0704473 | Human Services | MD | $1,574,601Small | 82.11 |
| Fourth Street ClinicEIN 87-0569356 | Health | UT | $7,465,281Mid-sized | 93.71 |
| Fox Cities Performing Arts CenterEIN 39-1977839 | Arts, Culture, Humanities | WI | $7,485,449Mid-sized | 83.27 |
| Fox Valley Christian ActionEIN 36-2911588 | Human Services | IL | $1,446,069Small | 84.68 |
| FramelineEIN 94-2775772 | Arts, Culture, Humanities | CA | $1,992,256Small | 87.52 |
| Franciscan Foundation for the Holy LandEIN 33-0628775 | Religion | DC | $2,478,438Small | 96.28 |
| Franciscan OutreachEIN 36-2928835 | Human Services | IL | $2,970,873Small | 88.16 |
| Franklin and Eleanor Roosevelt InstituteEIN 23-7213592 | Arts, Culture, Humanities | NY | $6,807,755Mid-sized | 90.37 |
| Franklin News FoundationEIN 26-4066298 | Research and Public Policy | IL | $4,189,004Mid-sized | 66.66 |
| FRAXA Research FoundationEIN 04-3222167 | Health | MA | $1,497,101Small | 97.17 |
| Frederick Rescue MissionEIN 52-0813371 | Human Services | MD | $3,569,445Mid-sized | 91.61 |
| Fredericksburg Area Food BankEIN 54-1255013 | Human Services | VA | $9,390,605Mid-sized | 91.30 |
| Frederik Meijer Gardens & Sculpture FoundationEIN 38-3118579 | Environment | MI | $4,455,748Mid-sized | 91.46 |
| Frederik Meijer Gardens & Sculpture ParkEIN 38-2394044 | Environment | MI | $19,104,355Large | 90.50 |
| Free Arts NYCEIN 13-3958495 | Human Services | NY | $1,782,779Small | 74.91 |
| Free PressEIN 41-2106721 | Human and Civil Rights | MA | $3,278,337Small | 96.04 |
| Free Software FoundationEIN 04-2888848 | Human and Civil Rights | MA | $1,233,394Small | 96.66 |
| Free Speech TVEIN 51-0173482 | Arts, Culture, Humanities | CO | $3,482,605Small | 82.04 |
| Free Spirit MediaEIN 36-4456215 | Education | IL | $1,828,094Small | 92.74 |
| Free The KidsEIN 22-3741436 | Human Services | NC | $3,425,714Small | 94.74 |
| Free the SlavesEIN 56-2189635 | International | DC | $3,086,993Small | 82.07 |
| Free To Choose NetworkEIN 52-1455677 | Arts, Culture, Humanities | PA | $3,734,838Mid-sized | 88.55 |
| Free Wheelchair MissionEIN 31-1781635 | International | CA | $9,315,991Mid-sized | 87.18 |
| Freedom AllianceEIN 54-1411430 | Human and Civil Rights | VA | $6,409,316Mid-sized | 90.18 |
| Freedom FoundationEIN 94-3136961 | Research and Public Policy | WA | $4,123,043Mid-sized | 78.12 |