PTI

• Internet Assigned Numbers Authority
• PT1 (disambiguation)
• Pacific Torah Institute
• Page-table isolation
• Pakistan Tehreek-e-Insaf
• Palomar Testbed Interferometer
• Pardon the Interruption
• Parent-teacher interview
• Part One
• Partai Tionghoa Indonesia
• Pennsylvania Transportation Institute
• Philippine Tobacco Institute
• Physical training instructor
• Piedmont Triad International Airport
• Pittsburgh Technical Institute
• Portugal Telecom
• Post-Tensioning Institute
• Powertech Technology
• Premier Travel Inn
• Press Trust of India
• Pretrial Intervention Program
• Produce Traceability Initiative
• Proof Tracking Index
• Public Technical Identifiers
• Ti plasmid
• WTII Records
• pathogen-associated molecular pattern