TTY may refer to:
Communications and technology Teleprinter or teletypewriter, an electromechanical typewriter paired with a communication channel Sometimes used more generally for any type of computer terminal May also be used to refer to a virtual console in Unix-like operating systems Another name for a telecommunications device for the deaf (TDD), a teleprinter designed for persons with hearing or speech difficulties tty (Unix), a command found in Unix-like operating systems
Other uses Tampere University of Technology (Tampereen Teknillinen Yliopisto), in Finland Torque-to-yield fastener