| 300 to Tiberius | 16 |
| 300 cubit-long vessel | 21 |
| 300 in old Rome | 15 |
| 300 minutes past midnight | 25 |
| 300 to 3,000 kilohertz | 22 |
| 300 to 3,000 MHz | 16 |
| 300 to 3,000 MHz range | 22 |
| 300 to 3000 megahertz, on the TV | 32 |
| 300, at the Forum | 17 |
| 300, in Roman numerals | 22 |
| 300, to Caesar | 14 |
| 300, to Livy | 12 |
| 300, to Tiberius | 16 |
| 300-3,000 MHz range | 19 |
| 300-cubit-long boat | 19 |
| 300-cubit-long craft | 20 |
| 300-cubit-long vessel | 21 |
| 300-game winner Glavine | 23 |
| 300-lb. president | 17 |
| 300-pound president | 19 |
| 300-year-old Mexican song that became a Top 40 hit | 50 |
| 301 | 3 |
| 301, in ancient Rome | 20 |
| 301, Roman-style | 16 |
| 301, to Caesar | 14 |
| 301, to Cato | 12 |
| 301, to Diocletian | 18 |
| 307 for Wyoming and 907 for Alaska | 34 |
| 30°, for 0.5 | 15 |
| 30th album might be signs of this | 33 |
| 30th anniversary | 16 |
| 30th anniversary gift | 21 |
| 30th anniversary gift or Ontario rapids | 39 |
| 30th anniversary gifts | 22 |
| 30th or 31st, briefly | 21 |
| 30th pres. | 10 |
| 30th president, informally | 26 |
| 30th Prince Edward Island Premier | 33 |
| 30th V.P. | 9 |
| 30th wedding anniversary gift | 29 |
| 31 gal. | 7 |
| 31,800,000 sq. mi. of water | 27 |
| 31-day mo. | 10 |
| 31-syllable Japanese poem | 25 |
| 310, to a letter writer | 23 |
| 3101, long ago | 14 |
| 311 "Don't Tread ___" | 35 |
| 311 "Many ___ since first I saw you" | 46 |
| 311 "You're cruisin', don't ___ care about what you're losing" | 88 |
| 311 song about making your own beer? | 36 |
| 311: "Many ___ since first I saw you" | 47 |
| 315 degrees on a compass | 24 |
| 31½ gallons: Abbr. | 21 |
| 31st best film of all time, according to AFI's tenth anniversary edition (with "The") | 99 |
| 31st president | 14 |
| 31st state | 10 |
| 31st state: Abbr. | 17 |
| 32 Beethoven pieces | 19 |
| 32 Boy or Girl Scouts | 21 |
| 32 cards in this game | 21 |
| 32 laps, in many pools | 22 |
| 32 ounces at Long John Silver's, e.g. | 41 |
| 32 pieces + board | 17 |
| 32 pieces and a board | 21 |
| 32 years elapsed between his first and most recent Emmys | 56 |
| 32,000 ounces | 13 |
| 32,808 152/381-ft. footrace | 27 |
| 32-card bidding game | 20 |
| 32-card card game | 17 |
| 32-card game | 12 |
| 32-card pack game | 17 |
| 32-man game | 11 |
| 32-time Davis Cup champ | 23 |
| 32.81 feet | 10 |
| 320 make a mile | 15 |
| 320 rods | 8 |
| 32008 | 5 |
| 320th of a mile | 15 |
| 325i maker | 10 |
| 325i or Z3 | 10 |
| 328d and 520i | 13 |
| 328i, e.g. | 10 |
| 32d V.P. | 8 |
| 32K ounces | 10 |
| 32nd in a noted series | 22 |
| 32nd of 50 | 10 |
| 32nd pres. | 10 |
| 32nd president and this puzzle's theme | 42 |
| 32nd prez | 9 |
| 32nd U.S. prez | 14 |
| 33 - 21 | 7 |
| 33 1/3 and 45, for short | 24 |
| 33 1/3 and others | 17 |
| 33 1/3 or 45, e.g. | 18 |
| 33 1/3 r.p.m. discs | 19 |
| 33 1/3 r.p.m. spinners | 22 |
| 33 1/3 rpm discs | 16 |
| 33 1/3 rpm disks | 16 |
| 33 1/3 rpm records | 18 |
| 33 1/3 rpm spinners | 19 |