Current operators:
 Netherlands
Royal Netherlands Army
802 Squadron (PAC-2 & PAC-3)
 Germany
Luftwaffe
Flugabwehrraketengeschwader 1
 Japan
Japan Air Self-Defense Force
Air Defense Missile Training Unit (ADMTU) (PAC-2 & PAC-3)
1st Air Defence Missile Group (1st ADMG) (PAC-2 & PAC-3)
2nd Air Defence Missile Group (2nd ADMG) (PAC-2 & PAC-3)
3rd Air Defence Missile Group (3rd ADMG) (PAC-2 & PAC-3)
4th Air Defence Missile Group (4th ADMG) (PAC-2 & PAC-3)
5th Air Defence Missile Group (5th ADMG) (PAC-2 & PAC-3)
6th Air Defence Missile Group (6th ADMG) (PAC-2 & PAC-3)
 Israel
Israeli Air Force
Israeli Air Defense Command (GEM+ "Yahalom") – To be replaced by David's Sling
 Saudi Arabia
Royal Saudi Air Defense
 Kuwait
Kuwait Air Force
In August 2010, the US Defense Security Cooperation Agency announced that Kuwait had formally requested to buy 209 MIM-104E PAC-2 missiles.
In August 2012, Kuwait purchased 60 MIM-104F PAC-3 missiles, along with four radars and 20 launchers.

 Jordan
Jordanian Air Force
JAF operates three or four Patriot missile batteries, acquired from Germany.
These batteries are deployed in Irbid near the Syrian border.
After the March 2017 Israel–Syria incident, government spokesperson Mohammad Momani threatened to use Patriot missiles to fend off any possible missile attack coming from Syria.

 Taiwan (Republic of China)
Republic of China (Taiwan) Armed Forces GHQ Missile Command
 Greece
Hellenic Armed Forces
350 Guided Missiles Wing
 Spain
Spanish Army
Regimiento de Artillería antiaérea 73
 South Korea
Republic of Korea Air Force (PAC-2 & PAC-3)
1st Air Defense Artillery Brigade (1st ADAB)
2nd Air Defense Artillery Brigade (2nd ADAB)
3rd Air Defense Artillery Brigade (3rd ADAB)
 United Arab Emirates
United Arab Emirates Armed Forces
In 2014, the United Arab Emirates closed a deal (nearly $4 billion) with Lockheed Martin and Raytheon to buy and operate the latest development of the PAC-3 system, as well as 288 of Lockheed's PAC-3 missiles, and 216 GEM-T missiles.
The deal is part of the development of a national defense system to protect the Emirates from air threats.
In 2019, The United Arab Emirates Armed Forces purchased 452 Patriot Advanced Capability 3 (PAC-3) Missiles Segment Enhanced (MSE) and related equipment for an estimated cost of $2.728 billion.

 Qatar
Qatar Armed Forces
In November 2012 it was announced the export from the United States of 246 MIM-104E GEM-T and 786 PAC-3 missiles and related equipment.
Declared operational in November 2018.

 United States
The US Army operates a total of 1,106 Patriot launchers.
In 2010, in the actual service of 483.

United States Army
11th Air Defense Artillery Brigade(11th ADAB)
1st Battalion, 43rd Air Defense Artillery Regiment (1-43rd ADAR)
2nd Battalion, 43rd Air Defense Artillery Regiment (2-43rd ADAR)
3rd Battalion, 43rd Air Defense Artillery Regiment (3-43rd ADAR)
5th Battalion, 52nd Air Defense Artillery Regiment (5-52nd ADAR)
31st Air Defense Artillery Brigade(31st ADAB)
3rd Battalion, 2nd Air Defense Artillery Regiment (3-2nd ADAR)
4th Battalion, 3rd Air Defense Artillery Regiment (4-3rd ADAR)
69th Air Defense Artillery Brigade  (69th ADAB)
4th Battalion, 5th Air Defense Artillery Regiment (4-5th ADAR)
1st Battalion, 44th Air Defense Artillery Regiment (1-44th ADAR)
1st Battalion, 62nd Air Defense Artillery Regiment (United States) (1-62nd ADAR)
108th Air Defense Artillery Brigade (108th ADAB)
1st Battalion, 7th Air Defense Artillery Regiment (1-7th ADAR)
3rd Battalion, 4th Air Defense Artillery Regiment (3-4th ADAR)
35th Air Defense Artillery Brigade (35th ADAB), Eighth Army
2nd Battalion, 1st Air Defense Artillery Regiment (2-1st ADAR)
1st Battalion, 1st Air Defense Artillery Regiment (1-1st ADAR)
6th Battalion, 52nd Air Defense Artillery Regiment (6-52nd ADAR)
5th Battalion, 7th Air Defense Artillery Regiment (5-7th ADAR)
3rd Battalion, 6th Air Defense Artillery Regiment (3-6th ADAR)
Current operators:
 Netherlands
Royal Netherlands Army
802 Squadron (PAC-2 & PAC-3)
 Germany
Luftwaffe
Flugabwehrraketengeschwader 1
 Japan
Japan Air Self-Defense Force
Air Defense Missile Training Unit (ADMTU) (PAC-2 & PAC-3)
1st Air Defence Missile Group (1st ADMG) (PAC-2 & PAC-3)
2nd Air Defence Missile Group (2nd ADMG) (PAC-2 & PAC-3)
3rd Air Defence Missile Group (3rd ADMG) (PAC-2 & PAC-3)
4th Air Defence Missile Group (4th ADMG) (PAC-2 & PAC-3)
5th Air Defence Missile Group (5th ADMG) (PAC-2 & PAC-3)
6th Air Defence Missile Group (6th ADMG) (PAC-2 & PAC-3)
 Israel
Israeli Air Force
Israeli Air Defense Command (GEM+ "Yahalom") – To be replaced by David's Sling
 Saudi Arabia
Royal Saudi Air Defense
 Kuwait
Kuwait Air Force
In August 2010, the US Defense Security Cooperation Agency announced that Kuwait had formally requested to buy 209 MIM-104E PAC-2 missiles. In August 2012, Kuwait purchased 60 MIM-104F PAC-3 missiles, along with four radars and 20 launchers.
 Jordan
Jordanian Air Force
JAF operates three or four Patriot missile batteries, acquired from Germany. These batteries are deployed in Irbid near the Syrian border. After the March 2017 Israel–Syria incident, government spokesperson Mohammad Momani threatened to use Patriot missiles to fend off any possible missile attack coming from Syria.
 Taiwan (Republic of China)
Republic of China (Taiwan) Armed Forces GHQ Missile Command
 Greece
Hellenic Armed Forces
350 Guided Missiles Wing
 Spain
Spanish Army
Regimiento de Artillería antiaérea 73
 South Korea
Republic of Korea Air Force (PAC-2 & PAC-3)
1st Air Defense Artillery Brigade (1st ADAB)
2nd Air Defense Artillery Brigade (2nd ADAB)
3rd Air Defense Artillery Brigade (3rd ADAB)
 United Arab Emirates
United Arab Emirates Armed Forces
In 2014, the United Arab Emirates closed a deal (nearly $4 billion) with Lockheed Martin and Raytheon to buy and operate the latest development of the PAC-3 system, as well as 288 of Lockheed's PAC-3 missiles, and 216 GEM-T missiles. The deal is part of the development of a national defense system to protect the Emirates from air threats. In 2019, The United Arab Emirates Armed Forces purchased 452 Patriot Advanced Capability 3 (PAC-3) Missiles Segment Enhanced (MSE) and related equipment for an estimated cost of $2.728 billion.
 Qatar
Qatar Armed Forces
In November 2012 it was announced the export from the United States of 246 MIM-104E GEM-T and 786 PAC-3 missiles and related equipment. Declared operational in November 2018.
 United States
The US Army operates a total of 1,106 Patriot launchers. In 2010, in the actual service of 483.
United States Army
11th Air Defense Artillery Brigade(11th ADAB)
1st Battalion, 43rd Air Defense Artillery Regiment (1-43rd ADAR)
2nd Battalion, 43rd Air Defense Artillery Regiment (2-43rd ADAR)
3rd Battalion, 43rd Air Defense Artillery Regiment (3-43rd ADAR)
5th Battalion, 52nd Air Defense Artillery Regiment (5-52nd ADAR)
31st Air Defense Artillery Brigade(31st ADAB)
3rd Battalion, 2nd Air Defense Artillery Regiment (3-2nd ADAR)
4th Battalion, 3rd Air Defense Artillery Regiment (4-3rd ADAR)
69th Air Defense Artillery Brigade  (69th ADAB)
4th Battalion, 5th Air Defense Artillery Regiment (4-5th ADAR)
1st Battalion, 44th Air Defense Artillery Regiment (1-44th ADAR)
1st Battalion, 62nd Air Defense Artillery Regiment (United States) (1-62nd ADAR)
108th Air Defense Artillery Brigade (108th ADAB)
1st Battalion, 7th Air Defense Artillery Regiment (1-7th ADAR)
3rd Battalion, 4th Air Defense Artillery Regiment (3-4th ADAR)
35th Air Defense Artillery Brigade (35th ADAB), Eighth Army
2nd Battalion, 1st Air Defense Artillery Regiment (2-1st ADAR)
1st Battalion, 1st Air Defense Artillery Regiment (1-1st ADAR)
6th Battalion, 52nd Air Defense Artillery Regiment (6-52nd ADAR)
5th Battalion, 7th Air Defense Artillery Regiment (5-7th ADAR)
3rd Battalion, 6th Air Defense Artillery Regiment (3-6th ADAR)
MIM-104 Patriot