| Longitudinal series of body segments | 36 |
| Longitude symbols, in cartography | 33 |
| Longing for "the good old times" | 42 |
| Longing for ''the good old days'' | 49 |
| Longhorn's school, informally | 33 |
| Longhorn State school near the Mex. border | 42 |
| Longfellow's village craftsman | 34 |
| Longfellow's Gitche Gumee, more familiarly | 46 |
| Longfellow's Evangeline and Gabriel, e.g. | 45 |
| Longfellow's "The Bells of San ___" | 49 |
| Longfellow's "The Bell of ___" | 44 |
| Longfellow's "The Bell of __" | 43 |
| Longfellow's "Tales of a ___" | 43 |
| Longfellow's "murmuring" trees | 44 |
| Longfellow's "mighty man" | 39 |
| Longfellow's "A ___ of Life" | 42 |
| Longfellow poem, with "The" | 37 |
| Longest-serving senator in U.S. history | 39 |
| Longest-serving Prime Minister of India | 39 |
| Longest-serving late-night TV host in the US | 44 |
| Longest-serving KGB chairman (1967-'82) | 43 |
| Longest-serving French president | 32 |
| Longest-serving Dodger coach Manny | 34 |
| Longest-serving current Supreme Court justice | 45 |
| Longest-serving Boston Symphony director | 40 |
| Longest-running series on network TV | 36 |
| Longest-running rock trio with the same lineup | 46 |
| Longest-running American humor mag | 34 |
| Longest-reigning British monarch | 32 |
| Longest-living member of the Rat Pack | 37 |
| Longest word not containing an a, e, i, o, or u | 47 |
| Longest river on the Iberian Peninsula | 38 |
| Longest river entirely within Switzerland | 41 |
| Longest river entirely in Switzerland | 37 |
| Longest reptile in the longest river? | 37 |
| Longest parts of the alimentary canal | 37 |
| Longest of its kind in the human body | 37 |
| Longest entry in the ''OED'' | 44 |
| Longest division of time, in geology | 36 |
| Longest division of geological time (var.) | 42 |
| Longest division of geological time | 35 |
| Longest division of geologic time | 33 |
| Longest continental mountain range | 34 |
| Longest book of the Book of Mormon | 34 |
| Longest book in the Book of Mormon | 34 |
| Longest and strongest human bone | 32 |
| Longbow shooter of fantasy fiction | 34 |
| Long-winged bird that skims the ocean | 37 |
| Long-winded oration of Andrew, e.g.? | 36 |
| Long-winded acceptance speeches in Stockholm? | 45 |
| Long-tongued comic strip character | 34 |
| Long-time Windy City orchestra leader | 37 |
| Long-time National Enquirer chief Calder | 40 |
| Long-time Cleveland Orchestra conductor | 39 |
| Long-time "Today" host | 32 |
| Long-term investments, for short | 32 |
| Long-term bank offering, briefly | 32 |
| Long-term appeal, as with news stories | 38 |
| Long-tailed ___ (small Eurasian bird) | 37 |
| Long-tailed tropical wall climbers | 34 |
| Long-tailed South American monkeys | 34 |
| Long-tailed monkey of South America | 35 |
| Long-standing advertising "conflicts" | 47 |
| Long-sought evolutionary connection | 35 |
| Long-short-short, in poetic meter | 33 |
| Long-running TV show featuring match-makers | 43 |
| Long-running TV series set in Colorado | 38 |
| Long-running TV series set in Calverton | 39 |
| Long-running TV hit beginning 4/1/63 | 36 |
| Long-running soap-opera-style comic strip | 41 |
| Long-running sketch comedy show, for short | 42 |
| Long-running reality show, familiarly | 37 |
| Long-running PBS documentary film series | 40 |
| Long-running NBC staple, for short | 34 |
| Long-running NBC show, for short | 32 |
| Long-running musical variety TV show | 36 |
| Long-running MTV show, with "The" | 43 |
| Long-running Mell Lazarus comic strip | 37 |
| Long-running former BBC comedy, for short | 41 |
| Long-running computer game series | 33 |
| Long-running Christie play, with "The" | 48 |
| Long-running Cartoon Network series | 35 |
| Long-running Broadway play, with "The" | 48 |
| Long-running Broadway musical, to fans | 38 |
| Long-running Broadway musical, familiarly | 41 |
| Long-running B'way musical seen by couples? | 47 |
| Long-running Art and Chip Sansom comic strip | 44 |
| Long-running "S.N.L." rival | 37 |
| Long-run Broadway play, with "The" | 44 |
| Long-reigning English monarch, informally | 41 |
| Long-range warhead carrier, briefly | 35 |
| Long-necked animal in a petting zoo | 35 |
| Long-maned model of romance cover fame | 38 |
| Long-lost friend, to an egotist? | 32 |
| Long-legged creatures on the beach | 34 |
| Long-lasting, in commercial names | 33 |
| Long-lasting living room illuminator | 36 |
| Long-lasting associations at Le Havre? | 38 |
| Long-eared dog's performance? | 33 |
| Long-distance travelers, in theory | 34 |