| Key with four sharps: Abbr. | 27 |
| Key with four sharps, for short | 31 |
| Key with four sharps (abbr.) | 28 |
| Key with four sharps | 20 |
| Key with four flats | 19 |
| Key with five sharps: Abbr. | 27 |
| Key with Ctrl and Delete in a computer operation | 48 |
| Key with an arrow | 17 |
| Key with Alt and Del | 20 |
| Key with all white notes | 24 |
| Key with a left-pointing arrow | 30 |
| Key with a beach | 16 |
| Key with a "#" on it | 30 |
| Key with 3 flats | 16 |
| Key Wimbledon matches | 21 |
| Key who draws "Hazel" | 31 |
| Key West-to-Fort Kent hwy. | 26 |
| Key West, for Truman | 20 |
| Key West, for one | 17 |
| Key West seafood | 16 |
| Key West fare | 13 |
| Key West cocktail | 17 |
| Key West and Honshu | 19 |
| Key weapon at Battle or Crecy | 29 |
| Key Watergate figure Sam | 24 |
| Key Watergate figure | 20 |
| Key Watergate evidence | 22 |
| Key watched o'er them | 25 |
| Key visibility aid? | 19 |
| Key using all the black keys: Abbr. | 35 |
| Key using all five black keys in its scale: Abbr. | 49 |
| Key using a piano's white keys only | 39 |
| Key used with Ctrl and Del to reboot | 36 |
| Key used to make change | 23 |
| Key used to close a window, perhaps | 35 |
| Key used in some shortcuts | 26 |
| Key used in shortcuts | 21 |
| Key used in PC combinations | 27 |
| Key used in conjunction with control and delete | 47 |
| Key used in combinations | 24 |
| Key underling | 13 |
| Key under Z and X | 17 |
| Key under the B | 15 |
| Key under Shift | 15 |
| Key training personnel | 22 |
| Key to which most clarinets are tuned | 37 |
| Key to unlocking this puzzle's theme | 40 |
| Key to this puzzle's theme, in English | 42 |
| Key to the world | 16 |
| Key to the puzzle's theme | 29 |
| Key to the left of F1 | 21 |
| Key to the left | 15 |
| Key to the city recipient, maybe | 32 |
| Key to the city recipient | 25 |
| Key to return | 13 |
| Key to modern warfare | 21 |
| Key to Microsoft's early success | 36 |
| Key to leave? | 13 |
| Key to Kane's life | 22 |
| Key to industrial revolution | 28 |
| Key to heredity, briefly | 24 |
| Key to heredity | 15 |
| Key to getting out of trouble? | 30 |
| Key to getting out of a jam? | 28 |
| Key to get out of a jam? | 24 |
| Key to exit? | 12 |
| Key to deciphering Egyptian hieroglyphics | 41 |
| Key to Apollo 13's rescue | 29 |
| Key to an exit? | 15 |
| Key to an exit | 14 |
| Key to a set of tests? | 22 |
| Key title | 9 |
| Key times in history | 20 |
| Key times | 9 |
| Key time for presidential primaries | 35 |
| Key things? | 11 |
| Key that's the same as B | 28 |
| Key that's the key to the shortcuts in this puzzle | 54 |
| Key that's really C | 23 |
| Key that won't work alone | 29 |
| Key that takes you back | 23 |
| Key that opens La Scala | 23 |
| Key that often sounds gloomy | 28 |
| Key that often has an arrow on it | 33 |
| Key that might close a window | 29 |
| Key that might close a dialog box | 33 |
| Key that indents | 16 |
| Key that helps you move in? | 27 |
| Key that helps you exit | 23 |
| Key that doesn't work by itself | 35 |
| Key that cancels | 16 |
| Key testimony in many a court case | 34 |
| Key task? | 9 |
| Key target of resolution | 24 |
| Key tag?: Abbr. | 15 |
| Key tablet in deciphering Egyptian writing | 42 |
| Key substitute | 14 |
| Key subject | 11 |
| Key stuff | 9 |
| Key structure | 13 |