| Louis and Bill | 14 |
| Louis and Carrie | 16 |
| Louis and Charles | 17 |
| Louis and Lawrence | 18 |
| Louis and Moritz | 16 |
| Louis and Paul, e.g. | 20 |
| Louis and Thomas: Abbr. | 23 |
| Louis Armstrong "___ Hagar's Blues" | 49 |
| Louis Armstrong and Neil Armstrong, for example | 47 |
| Louis Armstrong forte | 21 |
| Louis Armstrong hit "_____ Ramble" | 44 |
| Louis Armstrong instrument | 26 |
| Louis Armstrong nickname | 24 |
| Louis Armstrong played one | 26 |
| Louis Armstrong popularized it | 30 |
| Louis Armstrong Stadium divider | 31 |
| Louis Armstrong tune | 20 |
| Louis Armstrong's "Oh ___ He Ramble" | 50 |
| Louis Armstrong's "Weather Bird" collaborator | 59 |
| Louis Armstrong's "___ Miss Blues" | 48 |
| Louis Armstrong's horn | 26 |
| Louis Armstrong's instrument | 32 |
| Louis Armstrong's nickname | 30 |
| Louis Armstrong, informally | 27 |
| Louis Armstrong, sometimes | 26 |
| Louis Armstrong, to friends | 27 |
| Louis B. Mayer's Belarus birthplace | 39 |
| Louis B. Mayer's birthplace | 31 |
| Louis B., the "star-maker" | 36 |
| Louis Bonaparte's kingdom | 29 |
| Louis Botha, notably | 20 |
| Louis Braille and Les Paul | 26 |
| Louis Braille or Louis Chevrolet | 32 |
| Louis challenger | 16 |
| Louis d'or | 14 |
| Louis foe in '41 | 20 |
| Louis Freeh's org. | 22 |
| Louis from La. | 14 |
| Louis from Louisiana | 20 |
| Louis from New Orleans | 22 |
| Louis I's realm: Abbr. | 26 |
| Louis I, to Charlemagne | 23 |
| Louis is missing from a horse racing site? | 42 |
| Louis IX or Philippe IV | 23 |
| Louis Jolliet discovery of 1669 | 31 |
| Louis known as "Le Roi Soleil" | 40 |
| Louis L'Amour's "The Haunted --" | 50 |
| Louis L'Amour's "The Haunted ___" | 51 |
| Louis L'___ (prolific author of westerns) | 45 |
| Louis L'___, Sackett creator | 32 |
| Louis L'___, writer of Westerns | 35 |
| Louis Malle film of 1974, "___, Lucien" | 49 |
| Louis Malle's "My Dinner With ___" | 48 |
| Louis Malle's "___ Amants" | 40 |
| Louis Marie Julien Viaud | 24 |
| Louis of jazz | 13 |
| Louis of MGM | 12 |
| Louis of the F.B.I. | 19 |
| Louis of the Knicks | 19 |
| Louis of the N.B.A. | 19 |
| Louis opponent | 14 |
| Louis or Ali | 12 |
| Louis or Bill | 13 |
| Louis or Frazier | 16 |
| Louis or Henri | 14 |
| Louis or James | 14 |
| Louis or P.W., the first and last South African prime ministers | 63 |
| Louis or Paul | 13 |
| Louis or Philip | 15 |
| Louis or Philippe | 17 |
| Louis Philippe, e.g. | 20 |
| Louis Philippe, for one | 23 |
| Louis Prima's "Jump, ___ an' Wail" | 52 |
| Louis Quatorze, e.g. | 20 |
| Louis Quatorze, for example | 27 |
| Louis Quatorze, for one | 23 |
| Louis Quinze alternative | 24 |
| Louis Sachar children's book made into a 2003 Shia LaBeouf film | 67 |
| Louis Sachar kids' book heroine | 35 |
| Louis Spohr chamber work | 24 |
| Louis the Bold or Phillip the Lion | 34 |
| Louis the Lazy, for one | 23 |
| Louis Tiffany to Charles Tiffany | 32 |
| Louis Viaud's pen name | 26 |
| Louis VIII nickname, with "the" | 41 |
| Louis Vuitton competitor | 24 |
| Louis who is buried at the Panthéon | 38 |
| Louis who said "L'etat c'est moi" | 51 |
| Louis who was guillotined | 25 |
| Louis who wrote Western novels | 30 |
| Louis X1V, for one | 18 |
| Louis XIII, to Henry IV | 23 |
| Louis XIV e.g. | 15 |
| Louis XIV accessory | 19 |
| Louis XIV affirmation | 21 |
| Louis XIV and XV | 16 |
| Louis XIV and XV, e.g. | 22 |
| Louis XIV and XVI | 17 |
| Louis XIV and XVI, e.g. | 23 |
| Louis XIV et al. | 16 |