From Wikipedia:
https://en.wikipedia.org/wiki/CZ_75 Many countries use copies and clones produced by local manufacturers. This incomplete list only includes users of the original Czech-made CZ 75 and its variations.
Brazil: Used by the Brazilian Armed Forces
Bulgaria: Used by the Ministry of Interior
Chile: Used by Chilean Army Main handgun[citation needed]
Czech Republic: Used by the Czech Armed Forces. Also used by Czech police forces.
Egypt: Primary firearm of law enforcement since 2013
Finland: Used by The Finnish Customs
Georgia
Greece: Hellenic Police[citation needed]
Israel: Shin Bet
Kazakhstan: 75 pistols CZ-75B and 30 pistols CZ-75D were bought in 1998. These pistols are used by police SWAT teams.
Macedonia: CZ75 Used by Army of the Republic of Macedonia
Mexico: CZ P09 used by selected units of Federal Police since 2014
Philippines: Department of Interior and Local Government
Poland: Polish police (limited use).
Russian Federation: Used by law enforcement.
Singapore: Singapore Police
Slovakia: Slovak rail police, military police and the elite paramilitary tactical unit (Slovak: Kukl??i).
South Africa
Spain: Used by the Municipal police
Thailand: Used by Royal Thai Army special units and Ministry of Interior.
Turkey: General Directorate of Security
United States: Used by several police departments and Delta Force.