| 100% | LOU | 3 | He asked Bud "Who's on first?" |
| 63% | LOU | 3 | Who asked "Who's on first?" |
| 55% | LOU | 3 | Bud's "Who's on First?" partner |
| 55% | SECOND | 6 | Who's on First, What's on __ |
| 53% | NOONE | 5 | Who's on first, at the top of the inning |
| 52% | LINEUP | 6 | It reveals who's on first |
| 52% | WHO | 3 | He's on first |
| 49% | COSTELLO | 8 | "Who's on first?" asker |
| 49% | TODAY | 5 | "Who's on First?" catcher |
| 49% | COSTELLO | 8 | "Who's on First?" comic |
| 48% | LOUCOSTELLO | 11 | "Who's on First?" funny guy |
| 48% | ABBOTT | 6 | "Who's on First?" straight man |
| 48% | WHY | 3 | "Who's on First?" left fielder |
| 48% | ABBOTT | 6 | ''Who's on First?'' straight man |
| 48% | ABBOTT | 6 | “Who’s on First?” straight man |
| 48% | JACKMAN | 7 | Actor Hugh who married the star of the first TV show he appeared on |
| 47% | BUDABBOTT | 9 | Comedian in a classic sketch who is asked, "Who's on first?" (2 wds.) |
| 46% | WHOSWHO | 7 | "He's on first" |
| 46% | TODAY | 5 | Catcher in the "Who's on First?" routine |
| 46% | BUD | 3 | Half of the "Who's on First?" duo |
| 45% | MRSUN | 5 | He's asked to "please shine down on me," in song |
| 45% | LAYLA | 5 | Clapton song about girl who's got him on his knees |
| 45% | LOU | 3 | Costello in the "Who's on First?" comedy routine |
| 44% | EDIE | 4 | First name of the actress who plays Tommy on CBS's "Tommy" |
| 44% | AMAL | 4 | First name of George Clooney's wife, who delivered twins on June 6 |
| 44% | SARA | 4 | Ramirez who voiced Queen Miranda on Disney's "Sofia the First" |
| 43% | NAME | 4 | First ask on many forms |
| 42% | NAME | 4 | First ask on many application forms |
| 41% | BASE | 4 | First, in "Who's on First?" |
| 41% | JOHNSTOCKTON | 12 | NBA player (1984-2003) who's first on the list of most career assists: 2 wds. |