In Tennessee, you must be at least 18 years old to get a tattoo legally. Tattooing anyone under 18 is prohibited. However, there is an exception for minors aged 16 or 17: they may get tattooed only to cover up an existing tattoo, and only with the written consent of a parent or legal guardian who must be present during the procedure

. To summarize:

• Minimum age to get a tattoo: 18 years old.
• Exception: Minors 16 or older can get a tattoo only to cover an existing tattoo, with parental consent and presence.
• No tattooing allowed for anyone under 16, even with parental consent.

This is consistent with Tennessee state regulations and tattoo studio policies