| 1 mei-stadion | 1 mei-viering | 1 miljoen sterren |
| 1 miljoen vlinders | 1 Miljoen Vlinders | 1 Miljoen Wat? |
| 1 Minute | 1 minute film & sound awards | 1 Minute Film&Sound Awards |
| 1 nacht alleen | 1 Nacht alleen | 1 Nacht alleen (single) |
| 1 New York Plaza | 1 november | 1 November |
| 1 oktober | 1 Oktober | 1 op 1 |
| 1 op een miljoen | 1 Op Straat | 1 op Straat |
| 1 Petrus | 1 Polska Dywizja Pancerna | 1 Regiment Jagers te Paard - Gidsen |
| 1 Regiment Jagers te Paard – Gidsen | 1 Rincon Hill | 1 Samuël |
| 1 Samuel | 1 september | 1 September |
| 1 Sinterklaas | 1 Suriname | 1 tegen 100 |
| 1 Tegen 100 | 1 Tessalonicenzen | 1 Timoteüs |
| 1 Timoteus | 1 v. Chr. | 1 v.Chr. |
| 1 van de 8 | 1 van de acht | 1 Vandaag |
| 1 voor allen | 1 Voor Allen | 1 Wall Street |
| 1 World Trade Center | 1 WTC | 1%-regeling |
| 1%CLUB | 1%MC | 1&1 Versatel |
| 1&70 | 1+1 | 1+1+1+1+--- |
| 1+1+1+1+··· | 1+1=1 | 1+2=Paradise |
| 1, 2, 3 | 1, 2, 3 (Lil' Kleine) | 1, 2, 3, 4 |
| 1, 2, 3, 4 (lied) | 1, 2, 3, 4 (nummer) | 1, 2, 3, 4 (single) |
| 1, 2, 3, Sun | 1, 2, 3, sun | 1,039/Smoothed out slappy hours |
| 1,1'-azobisformamide | 1,1'-bi-2-naftol | 1,1'-bis(difenylfosfino)ferroceen |
| 1,1'-thiocarbonyldi-imidazool | 1,1'-Thiocarbonyldiimidazool | 1,1'-thiocarbonyldiimidazool |
| 1,1,1,2,3,3,3-heptafluorpropaan | 1,1,1,2-tetrafluorethaan | 1,1,1,2-tetrafluoroethaan |
| 1,1,1,3,3-pentafluorbutaan | 1,1,1-trichloorethaan | 1,1,1-tris(4-hydroxyfenyl)ethaan |
| 1,1,2,2-tetrachloorethaan | 1,1,2,2-tetrafluorethaan | 1,1,2,3,4,4-hexafluorbuta-1,3-dieen |
| 1,1,2-trichloor-1,2,2-trifluorethaan | 1,1,2-trichloorethaan | 1,1-di-joodethaan |
| 1,1-dichloor-1-fluorethaan | 1,1-dichloor-2,2,2-trifluorethaan | 1,1-dichloor-2-fluorethaan |
| 1,1-dichloorethaan | 1,1-dichlooretheen | 1,1-dichloorethyleen |
| 1,1-dichloorpropaan | 1,1-difluorethaan | 1,1-difluoretheen |
| 1,1-dijoodethaan | 1,1-dimethoxyethaan | 1,1-dimethylhydrazine |
| 1,10-fenantroline | 1,10-Fenantroline | 1,2,3 |
| 1,2,3 show | 1,2,3,3,3-pentafluorpropeen | 1,2,3,4 |
| 1,2,3,4,5,6,7 | 1,2,3,4-tetrafenylnaftaleen | 1,2,3-indaantrion |
| 1,2,3-propaantriol | 1,2,3-triazool | 1,2,3-trichloorbenzeen |
| 1,2,3-trichloorpropaan | 1,2,3-trimethylbenzeen | 1,2,3-trioxolaan |
| 1,2,4,5-tetrachloorbenzeen | 1,2,4,5-tetramethylbenzeen | 1,2,4-butaantriol |
| 1,2,4-triazool | 1,2,4-trichloorbenzeen | 1,2,4-trihydroxyanthrachinon |
| 1,2,4-trimethylbenzeen | 1,2,5-oxadiazool | 1,2-benzanthraceen |
| 1,2-bis(difenylfosfino)ethaan | 1,2-bis(dimethylfosfano)ethaan | 1,2-Bis(nitrooxy)ethaan |
| 1,2-butaandiol | 1,2-butyleencarbonaat | 1,2-di-ethylbenzeen |
| 1,2-di-joodethaan | 1,2-diaminoethaan | 1,2-diaminopropaan |
| 1,2-dibroom-3-chloorpropaan | 1,2-dibroomethaan | 1,2-dichloor-1,1,2,2-tetrafluorethaan |
| 1,2-dichloor-3-nitrobenzeen | 1,2-dichloor-4-nitrobenzeen | 1,2-dichloorbenzeen |
| 1,2-dichloorethaan | 1,2-dichlooretheen | 1,2-dichloorethyleen |
| 1,2-dichloorpropaan | 1,2-diethylbenzeen | 1,2-difenyl-1,2-ethaandion |
| 1,2-difenylethaan | 1,2-difenylethaandion | 1,2-difenylhydrazine |
| 1,2-difluorbenzeen | 1,2-difluorethaan | 1,2-dihydronaftaleen |
| 1,2-dihydroxybenzeen | 1,2-dijoodethaan | 1,2-dimethoxybenzeen |
| 1,2-Dimethoxybenzeen | 1,2-dimethoxyethaan | 1,2-dimethylcyclopropaan |
| 1,2-dinitrobenzeen | 1,2-dioxetaan | 1,2-dioxetaandion |
| 1,2-divinylbenzeen | 1,2-eliminatie | 1,2-ethaandiol |
| 1,2-propaandiamine | 1,2-propaandiol | 1,2020569031... |
| 1,3,3,3-tetrafluorpropeen | 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-gamma-2-benzopyraan | 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-γ-2-benzopyraan |
| 1,3,5-trichloor-2-methoxy-benzeen | 1,3,5-trichloorbenzeen | 1,3,5-trimethylbenzeen |
| 1,3,5-trinitrobenzeen | 1,3,6-cyclo-octatrieen | 1,3,6-cyclooctatrieen |
| 1,3-bis(difenylfosfino)propaan | 1,3-butaandiamine | 1,3-butaandiol |
| 1,3-butadieen | 1,3-buteenglycol | 1,3-cyclo-octadieen |
| 1,3-cycloheptadieen | 1,3-cyclohexadieen | 1,3-di-jood-2-propanol |
| 1,3-diaminobutaan | 1,3-diaminopropaan | 1,3-dibroompropaan |
| 1,3-dichloor-2-nitrobenzeen | 1,3-dichloor-4-nitrobenzeen | 1,3-dichloor-5-nitrobenzeen |
| 1,3-dichloorbenzeen | 1,3-dichloorpropaan | 1,3-dichloorpropeen |
| 1,3-difenylguanidine | 1,3-dijood-2-propanol | 1,3-dimesityl-imidazool-4,5-dihydro-2-ylideen |
| 1,3-Dimesityl-imidazool-4,5-dihydro-2-ylideen | 1,3-dimethyl-2-imidazolidinon | 1,3-Dimethylamylamine |
| 1,3-dinitrobenzeen | 1,3-dioxaan | 1,3-dioxepaan |
| 1,3-dioxetaan | 1,3-dioxetaandion | 1,3-dioxolaan |
| 1,3-dipolaire cycloadditie | 1,3-dipolaire verbinding | 1,3-dipool |
| 1,3-dithiaan | 1,3-divinylbenzeen | 1,3-indaandion |
| 1,3-pentadieen | 1,3-propaandiamine | 1,3-propaandiol |
| 1,3-propaansulton | 1,3-propiolacton | 1,3-thiazepine |
| 1,3035772690... | 1,30637788386... | 1,3247179572... |
| 1,4,8,11-tetraminecyclotetradecaan | 1,4-additie | 1,4-benzochinon |
| 1,4-benzochinonetetracarbonzuurdianhydride | 1,4-benzochinontetracarbonzuur | 1,4-benzochinontetracarbonzuurdianhydride |
| 1,4-butaandiamine | 1,4-butaandiol | 1,4-butaandioldiglycidylether |
| 1,4-butadiol | 1,4-butyleenglycol | 1,4-butyndiol |
| 1,4-cineool | 1,4-cyclo-octadieen | 1,4-cycloheptadieen |
| 1,4-cyclohexaandiol | 1,4-cyclohexadieen | 1,4-diaminobutaan |
| 1,4-dichloorbenzeen | 1,4-dihydropyridine | 1,4-dinitrobenzeen |
| 1,4-dioxaan | 1,4-dioxaantetraketon | 1,4-divinylbenzeen |
| 1,4-fenyleendi-isocyanaat | 1,4-fenyleendiisocyanaat | 1,4-heptonolacton |
| 1,4-thiazepine | 1,4142135623... | 1,5,9-cyclododecatrieen |
| 1,5-cyclo-octadieen | 1,5-cyclooctadieen | 1,5-diaminopentaan |
| 1,5-diazabicyclo(4.3.0)non-5-een | 1,5-naftaleendi-isocyanaat | 1,5-naftaleendiamine |
| 1,5-naftaleendiisocyanaat | 1,5-pentaandial | 1,5-pentaandiamine |
| 1,5-pentaandiol | 1,5-Pentaandiol | 1,6-difenyl-1,3,5-hexatrieen |
| 1,6-hexaandiamine | 1,6-hexaandiol | 1,6180339887... |
| 1,7-octadieen | 1,7320508075... | 1,8-cineool |
| 1,9021605831... | 1-(2-methoxypropoxy)-2-propanol | 1-(2-methoxypropoxy)propaan-2-ol |
| 1-(3-chlorofenyl)piperazine | 1-1-2 | 1-10 |
| 1-2-3 | 1-2-3-4 | 1-2-3-4 ou Les Collants noirs |
| 1-2-3-show | 1-2-Switch | 1-4-4 |
| 1-8-5-0 Live | 1-800-273-8255 | 1-9 |
| 1-900 | 1-Aardbeving | 1-amino-2-propanol |
| 1-aminocyclopropaan-1-carbonzuur | 1-Aminocyclopropaan-1-carbonzuur | 1-aprilgrap |
| 1-braan | 1-broom-4-fluorbenzeen | 1-broombutaan |
| 1-broompentaan | 1-broompropaan | 1-butaanthiol |
| 1-butanol | 1-buteenoxide | 1-butyl-3-methylimidazoliumhexafluorfosfaat |
| 1-butyl-3-methylimidazoliumtetrachloorferraat | 1-butyn | 1-Butyn |
| 1-chloor-1,1,2,2,2-pentafluorethaan | 1-chloor-1,1-difluorethaan | 1-chloor-2,4-dinitrobenzeen |
