Jenna W. answered 07/21/19
Masters degree in Criminal Justice and 10 years of work experience
In most instances, a subpoena can be issued and signed by an attorney on behalf of a court in which the attorney is authorized to practice law. If the subpoena is for a high-level government official (such as the Governor, or agency head), then it must be signed by an administrative law judge.
However, individuals who are a party to a lawsuit and other individuals may also be able to issue a subpoena, depending on the rules of civil or criminal procedure in the court that has jurisdiction of the case.