Countries and entities that use or have used the Glock, not including about a Bazillion other police forces in the US and around the world:
Country Organization Model
Algeria Département du Renseignement et de la Sécurité and Special Intervention Group[93] 17
Australia Australian Federal Police[94] 17, 19, 26
Corrective Services NSW,[citation needed] New South Wales Police Force,[95][96] Queensland Police Service,[96] Western Australia Police,[96] and Northern Territory Police[96][97] 22, 23, 27
Tasmania Police and the Australian Border Force[98] 17
Austria Austrian Armed Forces[99][100][101] 17 (as Pistole 80)
Azerbaijan 160 Glock pistols purchased in 2013. Used by Azerbaijani Special Military Services[102] 19
Bangladesh Numerous law enforcement agencies and Bangladesh Army[103] 17, 22, 23
Belarus "Almaz" antiterrorist group[104] 17
Belgium Federal and local police forces[105] 17, 19, 26
Brazil Federal Police Department - Departamento de Polícia Federal (DPF)[106] 17, 19, 26
Federal Highway Police - Polícia Rodoviária Federal (PRF)[107] 17, 17MOS, 26
Canada British Columbia Conservation Officer Service,[108] —
Quebec Safety - Sûreté du Québec (SQ)[100] 17, 19, 26
Royal Canadian Mounted Police (RCMP) [only Canadian Air Carrier Protective Program (CACPP) members] 19
Ontario Provincial Police (OPP)[63] 17M
Chile [109] 17
Colombia "Gaula EJC" Army antiextortion and antikidnapping group[104] 17
Croatia [109] 17
Denmark Slædepatruljen Sirius special forces[110] 20, 26
Czech Republic Nonstandard sidearm issued to personnel on international deployments[111] 17
601st Special Forces Group[112] 17
Ecuador National Police[100] 17
Various special police units such as the GOE and GIR[100] 17
Fiji Tactical Response Unit[113] —
Finland Border Guard[114] —
Defence Forces[114] 17 (as 9.00 PIST 2008)
Department of Corrections (Vankeinhoitolaitos)[114] —
Primary service firearm of the police[115] —
Estonia Police service pistol.[116] —
France Certain naval and airborne units of the French Armed Forces:[101][117] French Army Special Forces Brigade, Commandos Marine (France), Research sections of Gendarmerie Nationale, National Gendarmerie Intervention Group, Recherche Assistance Intervention Dissuasion, Groupes d'Intervention de la Police Nationale, Service de Protection des Hautes Personnalités, Brigade de recherche et d'intervention, Groupe de sécurité de la présidence de la République 17, 19, 26, 34
Georgia Mainly used by GSOF and some MIA units.[100][101] 17, 21, 26
Germany GSG 9 of the German Federal Police German commando frogmen of the Bundeswehr under the designation P9[118] 17
Greece EKAM[119] 21
Greenland Siriuspatruljen[120] 20
Hong Kong Hong Kong Police Force (including special units such as SDU, CTRU, ASU and SBDIV),[100] ICAC and Hong Kong Customs 17, 19
Iceland Iceland Crisis Response Unit (ICRU)[121][122][123] —
Icelandic National Police[121][122][123] —
Víkingasveitin[121][122][123] —
India Maharashtra Force One[124][125] 17, 19
National Security Guards, MARCOS and Para Commandos[100][126] 17, 26
Special Protection Group (replaced with FN Five-seven in 2008)[127] 17
Indonesia [109] 17
Iraq Iraqi security forces (largest Glock user, purchased 125,163 pistols)[128][129] 19
Israel Israeli Defense Forces, Israel Police, Shin Bet[101] 17, 19
Jordan Royal Guard[100] —
Kosovo Kosovo Police, Kosovo Security Force[130][131] 17
Latvia Latvian Military[101][132] 17
Lebanon [109] Used by Lebanese republican guards, military intelligence forces and by some members of the Lebanese Special Operations Command brigades 17
Liberia [109] 17
Lithuania Lithuanian Armed Forces[101][133] 17
Lithuanian Police[134] 17, 19, 26
Luxembourg Luxembourg Army[135] 17
Unité Spéciale de la Police of the Grand Ducal Police[136][137] 17, 26
Libya [138] 17, 17P, 19
Malaysia Malaysian Armed Forces[139] 17, 19, 34
Malaysian Maritime Enforcement Agency[140] 19
Royal Malaysia Police[139] 17, 18, 19, 26, 34
Royal Malaysian Custom[141] —
Mexico Mexican navy[100] —
Monaco Compagnie des Carabiniers du Prince[142][143] 17
Montenegro Military of Montenegro[144] 17
Netherlands Dutch police (about 250 Glock 17 pistols in use as a stopgap measure by the Arrestatieteam (Dutch SWAT))[145][146][147] 17
Military of the Netherlands[101][148][149]
The Royal Marechaussee Brigade Speciale Beveiligingsopdrachten (Special Protection Assignments Brigade) persoonsbeveiliging (PB), observatie team (OT) and sky marshals sections also use the Glock 26[150] 17, 18, 26
New Zealand New Zealand Police[151] (an "unarmed service", but are trained to use firearms) 17
New Zealand Defence Force[152] 17
Niger In use with Police and Garde Présidentielle[153] 17
Norway Norwegian Armed Forces[100][101] 17 (as P-80, P-80NM1, and P-80NM2)
Papua New Guinea [109] 17
Pakistan Special Services Group[154] 17, 19
Philippines National Bureau of Investigation[100] —
National Intelligence Coordinating Agency[100] —
Philippine Drug Enforcement Agency[100] —
Philippine National Police[100] 17 Gen 4
Presidential Security Group[100] 17
Philippine Marine Corps Marine Special Operations Group (MARSOG)[155] 21
Poland Border Guard[156] 19
Military Gendarmerie[101] 17
Polish police[157] 19
Portugal Portuguese Marine Corps[101][158] 17
Public Security Police[158] 19
Republican National Guard[158] 19
Romania Romanian Armed Forces[101] 17, 17L
Russia Ministry of Internal Affairs (MVD), special forces[159][160] 17, 19
Federal Security Service (FSB)[161] 17
Special Operations Forces (Russia)[162] 17, 26
Saudi Arabia Saudi Arabian Army[citation needed] 17
General Security[citation needed] 19
Serbia Police of Serbia[163][164] 17, 19, 21, 35
Sierra Leone Sierra Leone Police[165] 17
Singapore Singapore Prison Service[166] 19
Special Task Squadron (STS) of the Police Coast Guard[167] 19
South Korea [109] 17
Spain Unidad Especial de Intervención (UEI) group of the Spanish Civil Guard[168] 17
Sweden Swedish Armed Forces[101][169][170] 17 (as Pistol 88), 19 (as Pistol 88B)
Switzerland Police (Gendarmerie) Cantonal of Geneva[171] 19
Swiss Armed Forces: Swiss Grenadiers, ARD 10, FSK-17[172] 17, 26
Taiwan Various criminal investigation bureau outside major cities[173] 19
Thailand National police (2,238 pistols)[100] 19
Timor Leste National Police of East Timor[174] 19
Trinidad and Tobago [109] 17
Ukraine [109] 17
United Arab Emirates [109] 17
United Kingdom British Armed Forces[175] 17 (as L131A1),[176] 17T (as L132A1)
Police Service of Northern Ireland (PSNI)[177] 17
Scottish Police Specialist Firearms Units[178] 17
Specialist Firearms Command of the Metropolitan Police Service[179] 17, 26[180][181]
United States Alaska State Troopers[182] 20, 22
Bureau of Alcohol, Tobacco, Firearms and Explosives[183] 22, 27
Drug Enforcement Administration[184] 19, 22, 23, 27
Federal Bureau of Investigation[185] 17, 19, 21, 22, 23, 26, 27
Florida Highway Patrol[186] 37
Homeland Security Investigations[187] 17, 19, 26
Internal Revenue Service – Criminal Investigation[188] 22, 23
Kentucky State Police SRT[189] 35, 27
Marine Corps Forces Special Operations Command[190] 19
United States Navy SEALs[191] 19
New York State Police[192] 37, 39
Oregon Department of Corrections[193] 22
Pennsylvania Game Commission[192] 31
United States Marshals Service[194] 17, 19, 22, 23
Ohio Department of Rehabilitation and Corrections[195] 19
Uruguay Uruguayan National Army[196] 17
Venezuela Venezuelan Armed Forces[100][101] 17
Yemen Military of Yemen[197] 19