As per your demand here I am providing you name List of Present AEW&C Aircraft operators

Operator Aircraft
Brazilian Air Force Embraer R-99A
Chilean Air Force Boeing 707-385C
Egyptian Air Force Grumman E-2C Hawkeye
French Air Force Boeing E-3F Sentry
French Navy Grumman E-2C Hawkeye
Hellenic Air Force Embraer EMB-145H
Indian Air Force Ilyushin A-50EI
Indian Air Force DRDO AEW&CS
Israeli Air Force Gulfstream G550 CAEW
Japan Air Self-Defense Force Boeing E-767
Japan Air Self-Defense Force Grumman E-2C Hawkeye
Korean People's Air Force Antonov An-24
Mexican Air Force Embraer 145AEW&C
Mexican Air Force Embraer 145RS/GS
Mexican Air Force Fairchild C-26A
NATO Boeing E-3A
Pakistan Air Force Shaanxi ZDK-03 K. Eagle
Pakistan Air Force Saab 2000 Erieye
People's Liberation Army Air Force KJ-200
People's Liberation Army Air Force KJ-500
People's Liberation Army Air Force KJ-2000
People's Liberation Army Naval Air Force KJ-200
People's Liberation Army Naval Air Force KJ-500
Republic of China Air Force Grumman E-2T/K Hawkeye
Republic of Korea Air Force Boeing 737 AEW&C
Republic of Singapore Air Force Gulfstream G550
Royal Air Force Boeing Sentry AEW.1
Royal Australian Air Force Boeing 737 AEW&C
Royal Saudi Air Force Boeing E-3A
Royal Thai Air Force Saab S100B
Russian Air Force Beriev A-50
Swedish Air Force Saab S100B
Turkish Air Force Boeing 737 AEW&C
United Arab Emirates Air Force Saab S100B
United States Air Force Boeing E-3B/C Sentry
United States Navy Grumman E-2C-I/II Hawkeye