| 6R | 6r | 6R (disambiguation) |
| 6R10DB9 | 6R3 | 6R80 |
| 6RAR | 6RAT | 6RD |
| 6rd | 6RED | 6RN |
| 6rounds | 6row | 6RPH |
| 6RTR | 6RTR (disambiguation) | 6RTR (FM) |
| 6S | 6s | 6s (cricket) |
| 6S (disambiguation) | 6S (methodology) | 6S (music) |
| 6S (radiative transfer code) | 6S / SsrS RNA | 6S RNA |
| 6S2 | 6S4 | 6s8 |
| 6s8 (disambiguation) | 6SAT | 6SBSFM |
| 6SEA | 6SK1 | 6SN7 |
| 6SON | 6step | 6T |
| 6t | 6T (disambiguation) | 6T 5504 |
| 6T RAM cell | 6T SRAM | 6T SRAM cell |
| 6T-5504 | 6T5 | 6T5 (tube) |
| 6T5504 | 6TCR | 6teen |
| 6Teen | 6TEEN | 6teen (season 1) |
| 6teen (season 2) | 6teen (season 3) | 6teen (season 4) |
| 6teen Characters | 6teen episode 43 - Lights Out | 6teen Episodes |
| 6teen season 1 | 6teen season 2 | 6teen season 3 |
| 6teen season 4 | 6teen Stone | 6ter |
| 6th | 6th & I | 6th & I Historic Synagogue |
| 6th & Idaho | 6th & Idaho Productions | 6th & Main Station |
| 6th & Main station (Cincinnati) | 6th (1st Manchester) Lancashire Rifle Volunteer Corps | 6th (1st Warwickshire) Regiment of Foot |
| 6th (3rd Northern) Lanarkshire Artillery Volunteer Corps | 6th (Aberdeen) Aberdeenshire Artillery Volunteer Corps | 6th (Bangor) Carnarvonshire Rifle Volunteer Corps |
| 6th (Beverley) Yorkshire (East Riding) Rifle Volunteer Corps | 6th (Bradford) Yorkshire West Riding Rifle Volunteer Corps | 6th (Brandenburg) Cuirassiers "Emperor Nicholas I of Russia" |
| 6th (Brandenburg) Cuirassiers “Emperor Nicholas I of Russia” | 6th (Bridlington) Yorkshire (East Riding) Artillery Volunteers | 6th (Burntisland) Fife Artillery Volunteer Corps |
| 6th (Burslem) Staffordshire Rifle Volunteer Corps | 6th (Caergwrle) Flintshire Rifle Volunteer Corps | 6th (Caernarvonshire and Anglesey) Battalion, Royal Welch Fusiliers |
| 6th (Campbeltown) Argyllshire Artillery Volunteer Corps | 6th (Cheshire and Shropshire) Medium Brigade, Royal Garrison Artillery | 6th (City of London) Battalion, London Regiment |
| 6th (County Tyrone) Battalion, Ulster Defence Regiment | 6th (Cyclist) Battalion, Queen's Own (Royal West Kent Regiment) | 6th (Cyclist) Battalion, Royal Sussex Regiment |
| 6th (Dartmouth) Devonshire Artillery Volunteer Corps | 6th (Deal and Walmer) Cinque Ports Rifle Volunteer Corps | 6th (Dundee) Forfarshire Artillery Volunteer Corps |
| 6th (Extra Reserve) Battalion, King's Royal Rifle Corps | 6th (Extra Reserve) Battalion, Middlesex Regiment | 6th (Extra Reserve) Battalion, Worcestershire Regiment |
| 6th (Glamorgan) Battalion, Welch Regiment | 6th (Glamorgan) Battalion, Welsh Regiment | 6th (Grimsby Rifles) Lincolnshire Rifle Volunteer Corps |
| 6th (Gurkha) Parachute Brigade | 6th (Heckmondwike) Yorkshire (West Riding) Artillery Volunteer Corps | 6th (High Peak Rifles of Buxton) Derbyshire Rifle Volunteer Corps |
| 6th (Holm) Orkney Artillery Volunteer Corps | 6th (Iniskilling) Dragoons | 6th (Inniskilling) Dragoons |
| 6th (Inniskilling) Regiment of Dragoons | 6th (Kent) Army Brigade, RFA | 6th (Kent) Army Brigade, Royal Field Artillery |
| 6th (London) Corps Signals | 6th (Loughborough) Leicestershire Rifle Volunteer Corps | 6th (Lucknow) Infantry Brigade |
| 6th (Manawatu) Mounted Rifles | 6th (North East London) Tower Hamlets Rifle Volunteer Corps | 6th (Par Harbour) Cornwall Artillery Volunteer Corps |
| 6th (Peterborough) Northamptonshire Rifle Volunteer Corps | 6th (Petworth) Sussex Rifle Volunteer Corps | 6th (Poona) Cavalry Brigade |
| 6th (Poona) Division | 6th (Reserve) Battalion, Royal Fusiliers | 6th (Rifle) Battalion, King's (Liverpool Regiment) |
| 6th (Royal 1st Warwickshire) Regiment of Foot | 6th (Royal East Middlesex Militia) Battalion, Middlesex Regiment | 6th (Royal First Warwickshire) Regiment of Foot |
| 6th (Royal Flint Militia) Battalion, King's Royal Rifle Corps | 6th (Royal Welch) Parachute Battalion | 6th (Royal Welsh) Parachute Battalion |
| 6th (Ruthin) Denbighshire Rifle Volunteer Corps | 6th (Sandown) Isle of Wight Rifle Volunteer Corps | 6th (Scottish) Provisional Battalion (Territorial Force) |
| 6th (Service) Battalion, Leicestershire Regiment | 6th (Staffordshire) Company, Imperial Yeomanry | 6th (Stroud) Gloucestershire Rifle Volunteer Corps |
| 6th (Swanage) Dorsetshire Artillery Volunteer Corps | 6th (Talgarth) Brecknockshire Rifle Volunteer Corps | 6th (The Huddersfield) Yorkshire West Riding Rifle Volunteer Corps |
| 6th (Thrumster) Caithness Artillery Volunteer Corps | 6th (UK) Division | 6th (United Kingdom) Division |
| 6th (Volunteer) Battalion, Royal Anglian Regiment | 6th (Welch) Parachute Battalion | 6th (West Calder) Linlithgowshire Rifle Volunteer Corps |
| 6th (Windsor Iron Works) Lancashire Artillery Volunteer Corps | 6th (Worcestershire Militia) Battalion, Worcestershire Regiment | 6th AACTA Awards |
| 6th AACTA International Awards | 6th AARP Movies for Grownups Awards | 6th Abia State House of Assembly |
| 6th Academy Awards | 6th Academy Awards nominees and winners | 6th Academy of Country and Western Music Awards |
| 6th ACTRA Awards | 6th Administrative Battalion of Lancashire Rifle Volunteer Corps | 6th Administrative Council |
| 6th Administrative Council of North Korea | 6th Aero Squadron | 6th Aeroplane Squadron, RFC |
| 6th AFA | 6th Africa Magic Viewers' Choice Awards | 6th Africa Movie Academy Awards |
| 6th Africa Scout Jamboree | 6th Africa Scout Jamboree 2012 | 6th African Movie Academy Awards |
| 6th Air and Air Defence Forces Army | 6th Air Army | 6th Air Commando |
| 6th Air Commando Squadron | 6th Air Defence Army | 6th Air Defense Artillery (United States) |
| 6th Air Defense Artillery Brigade | 6th Air Defense Artillery Brigade (United States) | 6th Air Defense Artillery Regiment |
| 6th Air Defense Artillery Regiment (United States) | 6th Air Defense Missile Squadron | 6th Air Defense Wing |
| 6th Air Division | 6th Air Division (Japan) | 6th Air Division (United States) |
| 6th Air Force | 6th Air Group | 6th Air Intelligence Squadron |
| 6th Air Mobility Wing | 6th Air Refueling Squadron | 6th Air Refueling Wing |
| 6th Air Wing (TNI AU) | 6th Airborne Brigade (Poland) | 6th Airborne Division |
| 6th Airborne division | 6th Airborne Division (United Kingdom) | 6th Airborne Division (United States) |
| 6th Airborne Division advance to the River Seine | 6th Airborne Division advance to the Seine | 6th Airborne Division in Palestine |
| 6th Airborne Division order of battle | 6th Airbourne Division (United Kingdom) | 6th Airlanding Brigade |
| 6th Airlanding Brigade (United Kingdom) | 6th Airlift Squadron | 6th Airlift Squadron (United States) |
| 6th Alabama Cavalry Regiment | 6th Alabama Cavalry Regiment (Confederate) | 6th Alaska State Legislature |
| 6th Alberta general election | 6th Alberta Legislative Assembly | 6th Alberta Legislature |
| 6th Alberta Ministry | 6th Album Re-recording & ETPFEST Live | 6th Album Re-Recording and ETPFEST Live |
| 6th Alkino | 6th All-Africa Games | 6th All-Russian Conference of the Russian Social Democratic Labour Party |
| 6th Alpine Artillery Regiment | 6th Alpine Artillery Regiment (Italy) | 6th Alpine Division |
| 6th Alpine Division "Alpi Graie" | 6th Alpine Division Alpi Graie | 6th Alpini Regiment |
| 6th Amendment | 6th Amendment (disambiguation) | 6th Amendment to the United States Constitution |
| 6th American Music Awards | 6th Amphibious Division | 6th and 7th Books of Moses |
| 6th and main | 6th and Taylor | 6th and Taylor station |
| 6th Annual ARIA Music Awards | 6th Annual BFJA Awards | 6th Annual Black Reel Awards |
| 6th Annual Grammy Awards | 6th Annual Indonesian Movie Awards | 6th Annual Interactive Achievement Awards |
| 6th Annual Latin Grammy Awards | 6th Annual Logie Awards | 6th Annual NFL Honors |
| 6th Annual Premios Gardel | 6th Annual Streamy Awards | 6th Annual World Series of Poker |
| 6th Anti-aircraft Artillery Center | 6th Anti-Aircraft Brigade (United Kingdom) | 6th Anti-Aircraft Division |
| 6th Anti-Aircraft Division (United Kingdom) | 6th Anti-Aircraft Divisional Signals, Royal Corps of Signals | 6th Anti-aircraft Missiles Brigade (Romania) |
| 6th Antiaircraft Artillery Division of Air Force (People's Republic of China) | 6th Antisubmarine Squadron | 6th APAN Star Awards |
| 6th April | 6th Arabian Gulf Cup | 6th Archipelago Regiment |
| 6th ARIA Awards | 6th ARIA Music Awards | 6th Arizona State Legislature |
| 6th Arizona Territorial Legislature | 6th Arkansas Cavalry Battalion | 6th Arkansas Cavalry Regiment |
| 6th Arkansas Field Battery | 6th Arkansas Infantry | 6th Arkansas Infantry Regiment |
| 6th Arkansas Infantry Regiment (Colored) | 6th ARMM Regional Legislative Assembly | 6th Armored |
| 6th Armored Brigade | 6th Armored Cavalry Regiment | 6th Armored Division |
| 6th Armored Division (France) | 6th Armored Division (Iraq) | 6th Armored Division (People's Republic of China) |
| 6th Armored Division (Syria) | 6th Armored Division (United States) | 6th Armoured Brigade |
| 6th Armoured Brigade (Australia) | 6th Armoured Brigade (France) | 6th Armoured Brigade (United Kingdom) |
| 6th Armoured Car Regiment (Australia) | 6th Armoured Division | 6th Armoured Division (France) |
| 6th Armoured Division (Iraq) | 6th Armoured Division (Pakistan) | 6th Armoured Division (South Africa) |
| 6th Armoured Division (United Kingdom) | 6th Armoured Regiment (1st Hussars) | 6th Army |
| 6th Army (Austria-Hungary) | 6th Army (France) | 6th Army (German Empire) |
| 6th Army (Germany) | 6th Army (Italy) | 6th Army (Japan) |
| 6th Army (Kingdom of Yugoslavia) | 6th Army (RSFSR) | 6th Army (Russian Empire) |
| 6th Army (Soviet Union) | 6th Army (Wehrmacht) | 6th Army (Yugoslavia) |
| 6th Army Corps (Italy) | 6th Army Corps (Republic of China) | 6th Army Corps (Russian Empire) |
