| 1a | 1A | 1A (comics) |
| 1A (disambiguation) | 1A (Long Island bus) | 1A (radio program) |
| 1A (radio) | 1A (talk show) | 1A (WAMU) |
| 1A APS | 1a hair | 1a inhibitory interneuron |
| 1A Men's Volleyball League(Turkey) | 1a neurones | 1a Palace Gate |
| 1A Short Street | 1a space | 1A supernova |
| 1A-2500 | 1A-A1 | 1a-hydroxylase |
| 1A-LSD | 1A1 | 1A1 (disambiguation) |
| 1A12 | 1A2 | 1A2 Key System |
| 1A2 Key Telephone System | 1A3 | 1A4 |
| 1A5 | 1A6 | 1A9 |
| 1AC | 1ACS | 1ACV01 |
| 1ACV01 Space Pilot 3000 | 1ACV02 | 1ACV03 |
| 1ACV04 | 1ACV05 | 1ACV06 |
| 1ACV07 | 1ACV08 | 1ACV09 |
| 1ACV10 | 1ACV11 | 1ACV12 |
| 1ACV13 | 1AD | 1AD (disambiguation) |
| 1AESS | 1AESS switch | 1AF |
| 1alpha,25-dihydroxyvitamin D3 | 1am | 1AM |
| 1am (film) | 1AM (Meek Mill song) | 1am (single) |
| 1AM (song) | 1am (song) | 1am film |
| 1AM Freestyle | 1am Freestyle | 1am to 5am |
| 1and1 | 1antitrypsin | 1AR |
| 1AR-FE | 1ART | 1AU |
| 1Av | 1AZ | 1AZ (disambiguation) |
| 1AZ-FE | 1AZ-FSE | 1‒1‒2 |
| 1–11 and 13 Bath Street, Chester | 1–11 Oakley Street | 1–14 Pelham Crescent |
| 1–2 Chronicles | 1–2 finish (Formula One) | 1–2 finish (motorsport) |
| 1–2 finishes in Formula One | 1–2 July 2016 Dhaka attack | 1–2 Kings |
| 1–2 Orme Square | 1–2 Samuel | 1–21 Hyde Park Gardens Mews |
| 1–23 Edwardes Square | 1–23 Warwick Square | 1–29 Sicilian Avenue |
| 1–2–1–1 zone press | 1–2–3 Kid | 1–2–5 series in reverse |
| 1–3 | 1–3 Churchyard Side, Nantwich | 1–3 Churchyardside, Nantwich |
| 1–3 South Street | 1–3 West Bridge Street | 1–3–1 defense and offense |
| 1–3–1 zone | 1–5 and 6 Sydney Place | 1–5 Blake Street |
| 1–5 Pillory Street, Nantwich | 1–50 series (Chicago "L") | 1–50 series (CTA) |
| 1–6 Priory Street, Monmouth | 1–7 Argyle Place, Millers Point | 1–7 Constitution Hill, Birmingham |
| 1–7 Montpelier Square | 1–8 Collingham Gardens | 1–8 Porchester Square |
| 1–800 Dinosaur | 1–800–4–OK–SODA | 1–800–4–OK–Soda |
| 1–800–4–Ok–Soda | 1–800–I–FEEL–OK | 1–800–I–Feel–OK |
| 1–800–I–Feel–Ok | 1–9 East Gordon Street | 1–9–90 rule |
| 1′B1′ | 1′C+C1′ | 1′C1′ |
| 1′Co1′ | 1′D1′ | 1′Do1′ |
| 1′E1′ | 1′Eo1′ | 1⁄1 000 |
| 1⁄1 000 000 | 1⁄1'000 | 1⁄1'000'000 |
| 1⁄1,000 | 1⁄1,000,000 | 1⁄1,000,000,000 |
| 1⁄1.000 | 1⁄1.000.000 | 1⁄10 |
| 1⁄10 000 | 1⁄10'000 | 1⁄10,000 |
| 1⁄10.000 | 1⁄100 | 1⁄100 000 |
| 1⁄100'000 | 1⁄100,000 | 1⁄100.000 |
| 1⁄1000 | 1⁄10000 | 1⁄100000 |
| 1⁄1000000 | 1⁄1000000000 | 1⁄2 |
| 1⁰ | 1⁴ | 1⁵ |
| 1⁶ | 1⁷ | 1⁸ |
| 1⁹ | 1€ | 1₱ |
| 1₹ | 1₹ (Indian coin) | 1−2+3−4 |
| 1−2+3−4+ | 1−2+3−4+... | 1−2+3−4+… |
| 1−2+3−4+··· | 1∞ Giro d'Italia | 1∶144 scale |
| 1∶24 scale | 1¢ | 1ª |
| 1ª Copa de México de Naciones 2012 | 1ª Divisao de Andebol Feminino | 1ª Divisão de Andebol Feminino |
| 1ª Divisione bersaglieri "Italia" | 1° | 1° (song) |
| 1° ASA | 1° atrioventricular block | 1° de Mayo (Mexibús, Line 1) |
| 1° de Mayo (Mexibús, Line 2) | 1° de Villa (Mexibús) | 1° DIN |
| 1° heart block | 1° Sch. | 1° West |
| 1² | 1³ | 1µm |
| 1µm (semiconductor process) | 1¹ | 1¹⁰ |
| 1¹¹=1 (Power of Destiny) | 1º | 1º (disambiguation) |
| 1º Batalhao de Forcas Especiais | 1º Batalhão de Ações de Comandos | 1º Batalhão de Forças Especiais |
| 1º Batalhão de Forcas Especiais | 1º carbon | 1º Compañía de Comandos "Iquique" |
| 1º Compania de Comandos "Iquique" | 1º de Agosto | 1º de Agosto Volleyball |
| 1º de Maio | 1º de Maio de Quelimane | 1º de Maio Esporte Clube |
| 1º de Mayo | 1º de Mayo (disambiguation) | 1º de Mayo (Seville Metro) |
| 1º Dezembro | 1º Dezembro Feminino | 1º Esquadrão de Aviões de Interceptação e Ataque |
| 1º Pelotao de Defesa Quimica, Biologica e Nuclear | 1º Pelotao de Defesa Quimica, Biologica e Nuclear (1º Pel DQBN) | 1º Pelotão de Defesa Química, Biológica e Nuclear |
| 1º Pelotão de Defesa Química, Biológica e Nuclear (1º Pel DQBN) | 1º Sector | 1½ Knights - In Search of the Ravishing Princess Herzelinde |
| 1½ Knights – In Search of the Ravishing Princess Herzelinde | 1½ Knights: In Search of the Ravishing Princess Herzelinde | 1½ Ritter - Auf der Suche nach der hinreißenden Herzelinde |
| 1½ Ritter – Auf der Suche nach der hinreißenden Herzelinde | 1½ Strutter | 1さん |
| 1×1 gif | 1×1 GIF | 1×10 |
| 1×10^0 | 1×10^3 | 1×1=1 |
| 1×1=1 (To Be One) | 1×1=1 (TO BE ONE) | 1×2 |
| 1×2 jumper | 1×2 jumper pad | 1×2^0 |
| 1×2^10 | 1×3 jumper | 1×3 jumper pad |
| 1×4 | 1×6 | 1ère Escadrille de Chasse |
| 1ère fois | 1ère Régiment de Chevaulégers | 1÷0 |
| 1÷x=1 (Undivided) | 1B | 1b |
| 1B (disambiguation) | 1B (Long Island bus) | 1b afferent neurones |
| 1b hair | 1b inhibitory interneuron | 1B Pro League |
| 1b-Cadin-4-en-10-ol | 1B-LSD | 1B0 |
| 1b1 | 1B1 | 1B10 |
| 1B100 | 1B1R | 1B2 |
| 1B20 | 1B3 | 1B30 |
| 1B4 | 1B40 | 1B5 |
| 1B50 | 1B6 | 1B6 (scientific notation) |
| 1B60 | 1B7 | 1B70 |
| 1B8 | 1B80 | 1B9 |
| 1B90 | 1BANGSA | 1BASE5 |
| 1Bataan Risers | 1BC | 1bc |
| 1BC (disambiguation) | 1BCE | 1beale |
| 1Bib1Ref | 1bib1ref | 1bit |
| 1bit color | 1bit colour | 1BN 1MAR |
