Tenn. R. Civ. P. 45.03
As amended through July 2, 2024
A subpoena may be served by any person authorized to serve process, or the witness may acknowledge service in writing on the subpoena. Service of the subpoena shall be made by delivering or offering to deliver a copy thereof to the person to whom it is directed.
Tenn. R. Civ. P. 45.03