Carácter con un significado especial dentro de un sistema. Corresponden a los 65 caracteres en los rangos U+0000...U+001F y U+007F...U+009F.
- ACK
Acknowledge
- BEL
Bell
- BS
Backspace
- CAN
Cancel
- control code
código de control
- CR
Carriage Return
- DC1
Device Control 1
- DC2
Device Control 2
- DC3
Device Control 3
- DC4
Device Control 4 (stop)
- DLE
Data Link Escape
- EM
End of Medium
- ENQ
Enquire
- EOT
End Of Transmission
- ESC
Escape
- ETB
End of Transmision Block
- ETX
End of Text
- FF
Form Feed
- FS
File Separator
- GS
Group Separator
- LF
Line Feed
- NAK
Negative Acknowledgment
- NUL
Null
- RS
Record Separator
- SI
Shift In
- SO
Shift Out
- SOH
Start Of Header
- STX
Start of Text
- SUB
Substitute
- SYN
Synchronous
- TAB
Horizontal Tabulation
- US
Unit Separator
- VT
Vertical Tabulation