| 2He | 2I/Borisov | 2K |
| 2K Czech | 2K Games | 2K11 Krug |
| 2K12 | 2K12 Kub | 2K12 M2 KUB |
| 2K22 Tunguska | 2K32 | 2K32 Děva |
| 2K32 Deva | 2k38 | 2K38 |
| 2K8 Falanga | 2L8 | 2M TV |
| 2M1207 | 2MASS | 2MASS J00091071+5908591 |
| 2MASS J00261699-4218216 | 2MASS J00403044+5632145 | 2MASS J00564251+6043002 |
| 2MASS J01374284-5714119 | 2MASS J02523210-1246109 | 2MASS J03325591-0927298 |
| 2MASS J03350093-4825089 | 2MASS J03450978+2429038 | 2MASS J03451250+2428021 |
| 2MASS J03580177-1330310 | 2MASS J04140010-4217396 | 2MASS J04215943+1932063 |
| 2MASS J05004896-0545117 | 2MASS J0523-1403 | 2MASS J05455989-3218232 |
| 2MASS J05471708-5103594 | 2MASS J06521804-0511241 | 2MASS J06521806-0510253 |
| 2MASS J07411484-0933041 | 2MASS J07565094-5907325 | 2MASS J08033506-4000112 |
| 2MASS J08183157-7655108 | 2MASS J08254423-6608127 | 2MASS J10082229+1158018 |
| 2MASS J11193254–1137466 AB | 2MASS J1119–1137 | 2MASS J11342953-3249533 |
| 2MASS J11490366+1434197 | 2MASS J11525454-3354293 | 2MASS J1207334-393254 |
| 2MASS J12263615-6305571 | 2MASS J12295091-1631147 | 2MASS J12295187-1630552 |
| 2MASS J12334454+4121270 | 2MASS J13512593+6443238 | 2MASS J14042335+6422331 |
| 2MASS J14590969-4206151 | 2MASS J15204375+7150024 | 2MASS J15441605+0625324 |
| 2MASS J16483989-6901398 | 2MASS J17052018+5428126 | 2MASS J17250019+6718246 |
| 2MASS J17302597+5218051 | 2MASS J17362594+6820220 | 2MASS J17563637+5129197 |
| 2MASS J17574849+0441405 | 2MASS J18093745+3827288 | 2MASS J18122138-4326411 |
| 2MASS J18195084-0156190 | 2MASS J18265842-4558064 | 2MASS J19304540+2757549 |
| 2MASS J19322153+6939413 | 2MASS J20373291+1435421 | 2MASS J20393829+1554433 |
| 2MASS J20412592+4516491 | 2MASS J21154942+0514521 | 2MASS J21333397-4900323 |
| 2MASS J21364123-5050433 | 2MASS J21433045+5846480 | 2MASS J21563917+6337319 |
| 2MASS J22032156-5647093 | 2MASS J22035297+6307116 | 2MASS J22081397-4657393 |
| 2MASS J22155816+3744553 | 2MASS J22333464+5853470 | 2MASS J22391567+3903011 |
| 2MASS J22573901-2937193 | 2MASS J23062928-0502285 | 2MASS J23415498+4410407 |
| 2MASS J23522534+7532403 | 2MS | 2n |
| 2N Telekomunikace | 2nd | 2nd American Tour 1964 (The Rolling Stones) |
| 2nd American Tour 1965 (The Rolling Stones) | 2nd British Tour 1964 (The Rolling Stones) | 2nd British Tour 1965 (The Rolling Stones) |
| 2nd Cavalry Regiment | 2nd European Tour 1965 (The Rolling Stones) | 2nd Irish Tour 1965 (The Rolling Stones) |
| 2nd Live | 2NE1 | 2P/Encke |
| 2pac | 2Pac | 2QAM |
| 2S RT-21 Temp | 2S1 | 2S1 Gvozdika |
| 2S17 | 2S17 Nona-SV | 2S17-2 |
| 2S17-2 Nona-SV | 2S19 | 2S19 Msta |
| 2S22 | 2S22 Bohdana | 2S23 |
| 2S23 Nona-SVK | 2S3 Akacija | 2S31 |
| 2S31 Věna | 2S31 Vena | 2S34 |
| 2S34 Chosta | 2S4 | 2S4 Ťulpan |
| 2S4 Tulpan | 2S42 Lotos | 2S43 |
| 2S43 Malva | 2S5 | 2S5 Hyacint |
| 2S7 | 2S7 Pion | 2S9 |
| 2S9 Nona | 2S9 Nona-S | 2Tr |
| 2TV | 2U | 2Wings |
| 2WW | 2XS | 2К32 |
| 2К32 Děva | 3 | 3 (album Vladimíra Mišíka a Etc...) |
| 3 (album, Martin Chodúr) | 3 (album, Slza) | 3 (album, Vladimír Mišík a Etc...) |
| 3 (album, Vladimír Mišík a Etc…) | 3 (číslo) | 3 (film) |
| 3 (linka metra v Baku) | 3 (linka metra v Ciudad de México) | 3 (linka metra v Madridu) |
| 3 (linka metra v Paříži) | 3 (linka) | 3 (píseň) |
| 3 (rozcestník) | 3 (tramvajová linka v Paříži) | 3 + 1 s Miroslavem Donutilem |
| 3 Canis Minoris | 3 CMi | 3 Days to Kill |
| 3 dny Kondora | 3 dny na zabití | 3 Doors Down |
| 3 Inches of Blood | 3 Lyr | 3 Lyrae |
| 3 Lyry | 3 Malého psa | 3 mimo: Příběhy z Arkádie |
| 3 muži a nemluvně | 3 př. n. l. | 3 plus 1 |
| 3 plus 1 s Miroslavem Donutilem | 3 sezóny v pekle | 3 sezony v pekle |
| 3 souhvězdí Lyry | 3 souhvězdí Malého psa | 3 svědkové |
| 3 svědkové (mormonismus) | 3 svědkové Knihy Mormonovy | 3 WFC |
| 3 World Financial Center | 3' konec | 3' uhlík |
| 3' UTR | 3'-5' | 3'→5' |
| 3+1 | 3+1 s Miroslavem Donutilem | 3+2 |
| 3,14 | 3,3',4,4',6,6'-hexachlor-2,2'-methylendianilin | 3,3',4,4',6,6'-hexachlor-2,2'-methylendifenol |
| 3,3',4,4',6,6'-hexachlor-2,2'-metylendianilin | 3,3',4,4',6,6'-hexachlor-2,2'-metylendifenol | 3,3',4,4',6,6'-hexachloro-2,2'-methylendifenol |
| 3,3',4,4',6,6'-hexachloro-2,2'-metylendifenol | 3,3',4,4'-tetrahydroxy-2,2'-bipyridin-N,N'-dioxid | 3,3’-dichlorbenzidin |
| 3,4-dihydro-2H-pyran | 3,4-methylendioxyamfetamin | 3,4-methylendioxyfenol |
| 3,4-Methylenedioxyamfetamin | 3,4-metylendioxyamfetamin | 3,4-metylendioxyfenol |
| 3,5-Di-terc-butylsalicylaldehyd | 3,5-dibrom-4-hydroxybenzonitril | 3,5-dibromo-4-hydroxybenzonitril |
| 3,5-dimethyl-4-(methylsulfanyl)fenyl-N-methylkarbamát | 3,5-dimethyl-4-(methylsulfanyl)fenyl-N-metylkarbamát | 3,5-dimethyl-4-(metylsulfanyl)fenyl-N-methylkarbamát |
| 3,5-dimethyl-4-(metylsulfanyl)fenyl-N-metylkarbamát | 3,5-dimethylpyrazol | 3,5-dimetyl-4-(methylsulfanyl)fenyl-N-methylkarbamát |
| 3,5-dimetyl-4-(methylsulfanyl)fenyl-N-metylkarbamát | 3,5-dimetyl-4-(metylsulfanyl)fenyl-N-methylkarbamát | 3,5-dimetyl-4-(metylsulfanyl)fenyl-N-metylkarbamát |
| 3,5-lutidin | 3,6-diacetylmorfin | 3,6-dihydro-2H-pyran |
| 3,7 cm KPÚV vz. 34 | 3,7 cm Pak 36 | 3,7 cm protitankový kanón vz. 37 |
| 3,7-bis(dimethylamino)-fenothiazin-5-ium-chlorid | 3,7-bis(dimethylamino)-fenotiazin-5-ium-chlorid | 3,7-bis(dimetylamino)-fenothiazin-5-ium-chlorid |
| 3,7-bis(dimetylamino)-fenotiazin-5-ium-chlorid | 3,7-dihydropurin-2,6-dion | 3,7-dimethylokta-1,6-dien-3-ol |
| 3,7-dimethylokta-2,6-dienal | 3,7-dimethylxantin | 3,7-dimetylokta-1,6-dien-3-ol |
| 3,7-dimetylokta-2,6-dienal | 3,7cm KPÚV vz. 34 | 3,7cm Pak 36 |
| 3,7cm protitankový kanón vz. 37 | 3-(2-aminethyl)-1H-indol-5-ol | 3-(2-aminetyl)-1H-indol-5-ol |
| 3-(2-aminoethyl)-1H-indol-5-ol | 3-(2-aminoetyl)-1H-indol-5-ol | 3-(2-piperidyl)-pyridin |
| 3-(2-piperidyl)pyridin | 3-(3,4-dichlorfenyl)-1,1-dimethyl-karbonyldiamid | 3-(3,4-dichlorfenyl)-1,1-dimethylkarbamid |
| 3-(3,4-dichlorfenyl)-1,1-dimethylkarbonyl-diamid | 3-(3,4-dichlorfenyl)-1,1-dimethylkarbonyldiamid | 3-(3,4-dichlorfenyl)-1,1-dimetyl-karbonyldiamid |
| 3-(3,4-dichlorfenyl)-1,1-dimetylkarbamid | 3-(3,4-dichlorfenyl)-1,1-dimetylkarbonyl-diamid | 3-(3,4-dichlorfenyl)-1,1-dimetylkarbonyldiamid |
| 3-(3,4-dichlorofenyl)-1,1-dimethyl-karbonyldiamid | 3-(3,4-dichlorofenyl)-1,1-dimethylkarbamid | 3-(3,4-dichlorofenyl)-1,1-dimethylkarbonyl-diamid |
| 3-(3,4-dichlorofenyl)-1,1-dimethylkarbonyldiamid | 3-(3,4-dichlorofenyl)-1,1-dimetyl-karbonyldiamid | 3-(3,4-dichlorofenyl)-1,1-dimetylkarbamid |
| 3-(3,4-dichlorofenyl)-1,1-dimetylkarbonyl-diamid | 3-(3,4-dichlorofenyl)-1,1-dimetylkarbonyldiamid | 3-2-1 Tučňáci! |
| 3-alfa proces | 3-alfa reakce | 3-aminoaceton |
| 3-aminopropanon | 3-amylalkohol | 3-bromopren |
| 3-buten-1-yn | 3-chlor-1,2-propandiol | 3-chlor-1,2-propylenglykol |
| 3-chloro-1,2-propandiol | 3-chloro-1,2-propylenglykol | 3-chloropren |
| 3-chloropropan-1,2-diol | 3-chlorpropan-1,2-diol | 3-D film |
| 3-Day Weekend | 3-dehydroretin | 3-dehydroretinol |
| 3-deoxy-D-arabino-2-heptulózonová kyselina 7-fosfát | 3-deoxy-D-arabino-2-heptulosonová kyselina 7-fosfát | 3-ethoxy-4-hydroxybenzaldehyd |
| 3-etoxy-4-hydroxybenzaldehyd | 3-fosfoglycerát | 3-hydroxy-3-methylbutyrát |
| 3-hydroxy-3-metylbutyrát | 3-hydroxybutyrát | 3-hydroxycyklohexadien-1-on |
| 3-hydroxyfenol | 3-hydroxymethylbutyrát | 3-hydroxymetylbutyrát |
| 3-hydroxypropanal | 3-hydroxypropionová kyselina | 3-iron |
