TZ

TZ or tz may refer to:

• The Twilight Zone
• Tappan Zee Bridge
• Tappan Zee High School, a public high school in Orangeburg, New York, United States
• time zone
• Sony Vaio TZ
• tz database
• the IATA code for Scoot
• the IATA code for ATA Airlines
• TZ, The chemical weapon designation of the United States military for saxitoxin, a bacterial sodium channel blocker
• Tanzania, ISO 3166-1 alpha-2 country code
  • .tz, the country code top level domain (ccTLD) for Tanzania
• Transformation Zone, a term used in cervical cancer therapy, the area of the cervix where dysplasia and abnormal cell growth occur
• tz (newspaper), a German tabloid newspaper from Munich