| 100% | IRAN | 4 | One of the OPEC's founding members |
| 62% | STERLING | 8 | ___ Morrison, guitarist best known as one of the founding members of The Velvet Underground |
| 62% | VENEZUELA | 9 | Only founding member of OPEC not located in the Mideast |
| 61% | BARRETT | 7 | Musician Syd, one of the founding members of Pink Floyd, who departed the band in 1968 |
| 58% | NORWAY | 6 | One of NATO's founding members |
| 56% | TITO | 4 | One of the Jackson 5 members |
| 56% | TATTOO | 6 | One of the many clues found on Jane's body on 15-Across |
| 56% | SONIC | 5 | One of the S's in SST |
| 55% | SAS | 3 | One of the founding airlines of Star Alliance |
| 55% | WILYKIT | 7 | One of the youngest members of the ThunderCats |
| 55% | JERMAINE | 8 | One of the members of the Jackson 5 |
| 55% | ROMULUS | 7 | One of the twin brothers who founded Rome |
| 55% | IRAN | 4 | Founding member of OPEC |
| 54% | OPEC | 4 | Kuwait was one of its founding members |
| 54% | UTES | 4 | One of the two most recent Pac-12 members |
| 54% | HYDROGEN | 8 | One of the elements found in water, not oxygen |
| 54% | SHIP | 4 | One of the S's in U.S.S. |
| 54% | JOBS | 4 | One of the Steves who founded Apple |
| 54% | HANSARP | 7 | Founding member of the Dadaists |
| 54% | ONEIDA | 6 | One of the five founding nations of the Iroquois Confederacy |
| 53% | MIAHAMM | 7 | Founding member of the Washington Freedom |
| 53% | AQUAMAN | 7 | Founding member of the Justice League |
| 53% | YEMEN | 5 | Founding member of the Arab League |
| 53% | BRECKS | 6 | One of the oldest gardening companies that was founded in 1818 |
| 53% | INCISOR | 7 | One of the front teeth found in most mammals |
| 53% | LENNON | 6 | Founding member of the Plastic Ono Band |
| 52% | COLONY | 6 | One of 13 founding areas of the US |
| 52% | OAT | 3 | One of the grains often found in seven-grain bread |
| 52% | UAL | 3 | Founding member of the Star Alliance, for short |
| 52% | USSR | 4 | Founding member of the U.N. Security Council |