An Illinois Subpoena for Deposition is a legal document issued by a court in the state of Illinois that requires an individual or entity to appear before the court and give testimony under oath. This type of subpoena is commonly used in civil and criminal cases to compel a witness to provide oral testimony and/or documents as evidence. There are two types of Illinois Subpoena for Deposition: a Subpoena for Personal Appearance and a Subpoena for Documents. The Subpoena for Personal Appearance requires a witness to appear in court to give oral testimony, while the Subpoena for Documents requires the witness to provide documents and/or other tangible items to the court. Both types of Illinois Subpoena for Deposition can be issued by the court or the attorney representing a party in the case.