| Next CityEIN 22-3886361 | Arts, Culture, Humanities | PA | $1,198,553Small | 81.76 |
| Nine Network of Public MediaEIN 43-0685345 | Arts, Culture, Humanities | MO | $9,576,699Mid-sized | 88.20 |
| Nordic Heritage MuseumEIN 91-1107537 | Arts, Culture, Humanities | WA | $2,496,616Small | 74.74 |
| North Carolina Museum of Art FoundationEIN 23-7071511 | Arts, Culture, Humanities | NC | $14,467,906Large | 89.83 |
| North Dakota Museum of ArtEIN 45-0386152 | Arts, Culture, Humanities | ND | $1,106,820Small | 83.46 |
| Northeast Indiana Public RadioEIN 35-1514924 | Arts, Culture, Humanities | IN | $1,183,397Small | 82.20 |
| Northeastern Pennsylvania Philharmonic SocietyEIN 23-1855655 | Arts, Culture, Humanities | PA | $982,939Small | 73.85 |
| Northern Clay CenterEIN 41-1616650 | Arts, Culture, Humanities | MN | $1,760,777Small | 89.54 |
| Northern Stage CompanyEIN 04-3387268 | Arts, Culture, Humanities | VT | $3,628,374Mid-sized | 82.30 |
| Northwest FolklifeEIN 91-1311548 | Arts, Culture, Humanities | WA | $1,496,363Small | 83.07 |
| Northwest Indiana Public BroadcastingEIN 31-0960136 | Arts, Culture, Humanities | IN | $3,201,669Small | 73.48 |
| Norton Museum of ArtEIN 59-0624432 | Arts, Culture, Humanities | FL | $13,115,172Mid-sized | 80.09 |
| NPREIN 52-0907625 | Arts, Culture, Humanities | DC | $222,910,067Large | 84.25 |
| Oakland East Bay SymphonyEIN 94-3081554 | Arts, Culture, Humanities | CA | $2,813,517Small | 86.89 |
| Ojai Music FestivalEIN 95-2122508 | Arts, Culture, Humanities | CA | $1,980,707Small | 79.08 |
| Oklahoma City Art MuseumEIN 73-0528431 | Arts, Culture, Humanities | OK | $8,417,047Mid-sized | 86.56 |
| Oklahoma City BalletEIN 23-7003520 | Arts, Culture, Humanities | OK | $3,575,680Mid-sized | 80.71 |
| Oklahoma Contemporary Arts CenterEIN 73-1334271 | Arts, Culture, Humanities | OK | $2,546,424Small | 77.84 |
| Old Dartmouth Historical Society/New Bedford Whaling MuseumEIN 04-2104805 | Arts, Culture, Humanities | MA | $4,527,585Mid-sized | 93.25 |
| Old Globe TheatreEIN 95-1543396 | Arts, Culture, Humanities | CA | $25,227,945Large | 90.59 |
| Omaha Community PlayhouseEIN 47-0399856 | Arts, Culture, Humanities | NE | $4,315,647Mid-sized | 80.52 |
| Omaha Performing ArtsEIN 47-0832480 | Arts, Culture, Humanities | NE | $18,775,491Large | 85.12 |
| Omaha SymphonyEIN 47-6039304 | Arts, Culture, Humanities | NE | $7,876,033Mid-sized | 95.83 |
| On the BoardsEIN 91-1081983 | Arts, Culture, Humanities | WA | $1,635,622Small | 90.81 |
| OPERA AmericaEIN 20-3520577 | Arts, Culture, Humanities | NY | $7,895,530Mid-sized | 91.83 |
| Opera ColoradoEIN 84-0850527 | Arts, Culture, Humanities | CO | $4,098,622Mid-sized | 74.02 |
| Opera Company of PhiladelphiaEIN 23-1504706 | Arts, Culture, Humanities | PA | $14,101,013Large | 78.76 |
| Opera MemphisEIN 62-0785544 | Arts, Culture, Humanities | TN | $1,623,169Small | 83.52 |
| Opera OmahaEIN 47-6032795 | Arts, Culture, Humanities | NE | $3,861,688Mid-sized | 96.90 |
| Opera San JoséEIN 77-0009773 | Arts, Culture, Humanities | CA | $4,434,463Mid-sized | 92.72 |
| Opera Theatre of Saint LouisEIN 43-0821958 | Arts, Culture, Humanities | MO | $10,222,016Mid-sized | 93.44 |
| Orange County Museum of ArtEIN 95-1660847 | Arts, Culture, Humanities | CA | $2,605,178Small | 85.08 |
| Orchestra of St. Luke'sEIN 51-0201839 | Arts, Culture, Humanities | NY | $7,749,571Mid-sized | 86.11 |
| Ordway Center for the Performing ArtsEIN 41-1428998 | Arts, Culture, Humanities | MN | $21,131,100Large | 91.33 |
| Oregon Ballet TheatreEIN 93-1009305 | Arts, Culture, Humanities | OR | $7,234,406Mid-sized | 90.58 |
| Oregon Historical SocietyEIN 93-0391599 | Arts, Culture, Humanities | OR | $8,175,545Mid-sized | 90.76 |
| Oregon Museum of Science and IndustryEIN 93-0402877 | Arts, Culture, Humanities | OR | $21,468,218Large | 92.80 |
| Oregon Public BroadcastingEIN 93-0814638 | Arts, Culture, Humanities | OR | $31,776,224Large | 90.24 |
| Oregon Shakespeare FestivalEIN 93-0407022 | Arts, Culture, Humanities | OR | $41,256,313Large | 87.08 |
| Oregon SymphonyEIN 93-0446527 | Arts, Culture, Humanities | OR | $18,547,539Large | 89.51 |
| Orlando Museum of ArtEIN 59-0910352 | Arts, Culture, Humanities | FL | $3,686,650Mid-sized | 85.17 |
| Orlando Philharmonic OrchestraEIN 59-3058884 | Arts, Culture, Humanities | FL | $5,112,662Mid-sized | 89.11 |
| Orlando Science CenterEIN 59-0896343 | Arts, Culture, Humanities | FL | $9,959,285Mid-sized | 89.48 |
| Orlando Shakespeare TheaterEIN 59-2931698 | Arts, Culture, Humanities | FL | $3,747,155Mid-sized | 91.91 |
| Orpheus Chamber OrchestraEIN 23-7362572 | Arts, Culture, Humanities | NY | $2,993,130Small | 78.95 |
| Pacific Islanders in CommunicationsEIN 99-0293514 | Arts, Culture, Humanities | HI | $1,483,812Small | 79.39 |
| Pacific Northwest BalletEIN 91-0897129 | Arts, Culture, Humanities | WA | $25,339,726Large | 90.05 |
| 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 |
| Paleontological Research InstitutionEIN 15-0554849 | Arts, Culture, Humanities | NY | $2,561,752Small | 78.74 |
| Palm Beach OperaEIN 59-1060864 | Arts, Culture, Humanities | FL | $4,633,253Mid-sized | 86.79 |
| Palm Springs Art MuseumEIN 95-1809576 | Arts, Culture, Humanities | CA | $12,050,122Mid-sized | 78.26 |
| Panhandle-Plains Historical MuseumEIN 75-6019872 | Arts, Culture, Humanities | TX | $1,903,823Small | 82.91 |
| 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 Square Theatre CompanyEIN 41-1280683 | Arts, Culture, Humanities | MN | $3,602,045Mid-sized | 87.96 |
| Partners for Sacred PlacesEIN 23-2560361 | Arts, Culture, Humanities | PA | $1,836,122Small | 78.32 |
| Pasadena Conservatory of MusicEIN 95-3900207 | Arts, Culture, Humanities | CA | $2,985,332Small | 91.23 |
| Paul Taylor Dance FoundationEIN 13-2665475 | Arts, Culture, Humanities | NY | $9,680,646Mid-sized | 89.24 |
| PBS HawaiiEIN 99-0334518 | Arts, Culture, Humanities | HI | $8,314,003Mid-sized | 91.88 |