| Human Race Theatre CompanyEIN 31-1176135 | Arts, Culture, Humanities | OH | $1,749,607Small | 84.83 |
| Humanities TexasEIN 75-1493438 | Arts, Culture, Humanities | TX | $2,994,319Small | 85.74 |
| Hunter Museum of American ArtEIN 62-0511893 | Arts, Culture, Humanities | TN | $2,934,324Small | 83.82 |
| Huntington Museum of ArtEIN 55-0372921 | Arts, Culture, Humanities | WV | $2,112,790Small | 78.74 |
| Huntington Theatre CompanyEIN 22-2659560 | Arts, Culture, Humanities | MA | $14,175,401Large | 86.60 |
| Huntsville Museum of ArtEIN 63-0644957 | Arts, Culture, Humanities | AL | $2,277,867Small | 73.13 |
| Huntsville Symphony OrchestraEIN 63-0463802 | Arts, Culture, Humanities | AL | $2,008,399Small | 80.20 |
| Hyde Park Art CenterEIN 36-2887294 | Arts, Culture, Humanities | IL | $2,226,933Small | 91.02 |
| Illinois Holocaust Museum & Education CenterEIN 36-3156154 | Arts, Culture, Humanities | IL | $8,417,466Mid-sized | 85.57 |
| Illinois Valley Public Telecommunications CorporationEIN 23-7041401 | Arts, Culture, Humanities | IL | $3,110,167Small | 76.51 |
| Imagine Children's MuseumEIN 94-3153591 | Arts, Culture, Humanities | WA | $2,018,647Small | 96.07 |
| Impression 5 Science CenterEIN 23-7200548 | Arts, Culture, Humanities | MI | $1,619,983Small | 90.58 |
| Independence MediaEIN 22-2600747 | Arts, Culture, Humanities | PA | $2,758,153Small | 87.44 |
| Independence Seaport MuseumEIN 23-1584971 | Arts, Culture, Humanities | PA | $5,018,524Mid-sized | 81.35 |
| Independent Media InstituteEIN 52-1309876 | Arts, Culture, Humanities | NY | $2,023,149Small | 77.38 |
| Indiana Historical SocietyEIN 35-0876384 | Arts, Culture, Humanities | IN | $12,091,643Mid-sized | 83.95 |
| Indiana Repertory TheatreEIN 35-1186290 | Arts, Culture, Humanities | IN | $7,233,067Mid-sized | 88.31 |
| Indianapolis Opera CompanyEIN 35-1405179 | Arts, Culture, Humanities | IN | $1,109,270Small | 68.68 |
| Indianapolis Symphony OrchestraEIN 35-0998627 | Arts, Culture, Humanities | IN | $23,290,238Large | 78.59 |
| Institute of Contemporary Art, Los AngelesEIN 95-3992968 | Arts, Culture, Humanities | CA | $1,286,254Small | 77.28 |
| International Center of PhotographyEIN 23-7412428 | Arts, Culture, Humanities | NY | $17,276,229Large | 81.79 |
| International Churchill SocietyEIN 02-0482584 | Arts, Culture, Humanities | DC | $947,322Small | 75.26 |
| International Festival of Arts & IdeasEIN 06-1444222 | Arts, Culture, Humanities | CT | $2,299,189Small | 82.87 |
| International Folk Art AllianceEIN 35-2285824 | Arts, Culture, Humanities | NM | $3,349,957Small | 92.45 |
| International Tennis Hall of FameEIN 13-6144356 | Arts, Culture, Humanities | RI | $10,386,956Mid-sized | 85.30 |
| Intersection for the ArtsEIN 94-1593216 | Arts, Culture, Humanities | CA | $3,286,407Small | 95.00 |
| Intiman TheatreEIN 23-7328597 | Arts, Culture, Humanities | WA | $970,982Small | 76.76 |
| Intrepid Museum FoundationEIN 13-3062419 | Arts, Culture, Humanities | NY | $35,136,930Large | 87.01 |
| Irish Arts CenterEIN 51-0244834 | Arts, Culture, Humanities | NY | $3,362,693Small | 81.56 |
| Irish Cultural CenterEIN 86-0930096 | Arts, Culture, Humanities | AZ | $859,521Small | 70.77 |
| Isabella Stewart Gardner MuseumEIN 04-2104334 | Arts, Culture, Humanities | MA | $22,135,619Large | 88.13 |
| Jacksonville Symphony OrchestraEIN 59-6002520 | Arts, Culture, Humanities | FL | $13,394,954Mid-sized | 87.57 |
| Jacob Burns Film CenterEIN 13-4038441 | Arts, Culture, Humanities | NY | $8,301,557Mid-sized | 94.09 |
| Jacob's Pillow DanceEIN 04-6002993 | Arts, Culture, Humanities | MA | $7,337,132Mid-sized | 91.76 |
| James A. Michener Art MuseumEIN 23-2471583 | Arts, Culture, Humanities | PA | $4,039,629Mid-sized | 89.37 |
| James Sewell BalletEIN 41-1787932 | Arts, Culture, Humanities | MN | $1,019,266Small | 81.71 |
| Jamestown-Yorktown FoundationEIN 31-1618642 | Arts, Culture, Humanities | VA | $2,823,765Small | 87.55 |
| Japanese American National MuseumEIN 95-3966024 | Arts, Culture, Humanities | CA | $6,296,885Mid-sized | 86.96 |
| Jazz Arts Group of ColumbusEIN 31-0852944 | Arts, Culture, Humanities | OH | $1,684,117Small | 74.63 |
| Jazz Aspen SnowmassEIN 84-1220222 | Arts, Culture, Humanities | CO | $9,116,867Mid-sized | 86.72 |
| Jazz at Lincoln CenterEIN 13-3888641 | Arts, Culture, Humanities | NY | $42,594,869Large | 91.51 |
| Jazz St. LouisEIN 43-1761629 | Arts, Culture, Humanities | MO | $3,208,441Small | 90.81 |
| Jewish Womens ArchiveEIN 04-3293188 | Arts, Culture, Humanities | MA | $1,300,448Small | 81.26 |
| John F. Kennedy Library FoundationEIN 04-6113130 | Arts, Culture, Humanities | MA | $6,599,168Mid-sized | 83.12 |
| John Michael Kohler Arts CenterEIN 39-1085180 | Arts, Culture, Humanities | WI | $6,450,212Mid-sized | 88.26 |
| John P. McGovern Museum of Health & Medical ScienceEIN 74-6106357 | Arts, Culture, Humanities | TX | $4,374,064Mid-sized | 87.91 |
| Joslyn Art MuseumEIN 47-0384577 | Arts, Culture, Humanities | NE | $7,453,498Mid-sized | 91.81 |
| Joyce Theater FoundationEIN 13-3038262 | Arts, Culture, Humanities | NY | $11,916,874Mid-sized | 91.30 |
| Kalamazoo Institute of ArtsEIN 38-1617060 | Arts, Culture, Humanities | MI | $3,408,204Small | 84.82 |
| Kalamazoo Symphony OrchestraEIN 38-6005710 | Arts, Culture, Humanities | MI | $3,637,484Mid-sized | 92.50 |
| Kansas City BalletEIN 43-6052680 | Arts, Culture, Humanities | MO | $10,326,107Mid-sized | 95.24 |
| Kansas City Repertory TheatreEIN 43-1168979 | Arts, Culture, Humanities | MO | $7,243,463Mid-sized | 85.33 |
| Kansas City Starlight TheatreEIN 44-0552079 | Arts, Culture, Humanities | MO | $20,852,373Large | 95.40 |
| Kansas City SymphonyEIN 43-1297475 | Arts, Culture, Humanities | MO | $16,520,157Large | 90.67 |
| Katahdin ProductionsEIN 90-0089252 | Arts, Culture, Humanities | CA | $2,078,366Small | 65.83 |
| Katonah Museum of ArtEIN 13-6161548 | Arts, Culture, Humanities | NY | $1,716,906Small | 76.43 |
| Kauffman Center for the Performing ArtsEIN 43-1866550 | Arts, Culture, Humanities | MO | $21,566,408Large | 89.45 |
| KCBXEIN 23-7292203 | Arts, Culture, Humanities | CA | $1,284,419Small | 86.74 |
| KCETLinkEIN 95-2211661 | Arts, Culture, Humanities | CA | $28,403,983Large | 77.03 |
| KCRW FoundationEIN 95-3750631 | Arts, Culture, Humanities | CA | $19,335,725Large | 90.18 |