JT3 may refer to:

• John Thompson III, former head coach of the men's basketball team at Georgetown University
• Pratt & Whitney JT3C, a turbojet engine
• Pratt & Whitney JT3D, a turbofan engine

• Ali Rizvi Badshah
• Alirocumab
• Ali Rogers
• Ali Rowghani
• Ali-Royal
• Al irshad al Islamiya
• Al irshad al islamiya
• Al-Irshad Al-Islamiya
• Al-Irshād al-Islāmiyyah
• Al-Irsyad
• Al-Irsyad Al-Islamiyah
• Al-Irsyad Mosque
• Alirt
• Al Irwin
• Ali Rıza Alan
• Ali Rıza Binboğa
• Ali Rıza Paşa
• Ali Rıza Sergen Yalçın
• Alisa amseli
• Ali Sabah Al-Salem Stadium
• Ali sabat
• Ali Sabbagh
• `Ali Sabieh
• Ali Sabieh Mountain
• Alisa Bokulich