Oklahoma Witness List for Trial/Hearing (CV-15a) is an official form used by the courts of the State of Oklahoma. This form is used to list the witnesses who will be called to testify in a civil trial or hearing. It includes the name of the witness, their address, and a brief description of their expected testimony. The form also requires the signature of the counsel for the party who wishes to call the witness. The two types of Oklahoma Witness List for Trial/Hearing (CV-15a) are the Plaintiff's Witness List and the Defendant's Witness List. The Plaintiff's Witness List includes the witnesses the plaintiff wishes to call in the case, while the Defendant's Witness List includes the witnesses the defendant wishes to call.