Oklahoma Courts from Which Appeals are Lodged include the Oklahoma Supreme Court, the Oklahoma Court of Criminal Appeals, and the Oklahoma Court of Civil Appeals. The Oklahoma Supreme Court is the highest court in the state of Oklahoma and hears appeals from both the Oklahoma Court of Criminal Appeals and the Oklahoma Court of Civil Appeals. The Oklahoma Court of Criminal Appeals is the state's highest court for criminal matters and hears appeals from lower criminal courts. The Oklahoma Court of Civil Appeals is the state's highest court for civil matters and hears appeals from lower civil courts. These three courts provide Oklahoma with an appellate court system that allows citizens to have their cases heard and reviewed by higher courts in order to ensure justice is served.