Mississippi Code
Article 2 - Judicial Proceedings
§ 91-8-203. Subject-matter jurisdiction

Except as provided in subsections (b) and (c), the chancery court has exclusive jurisdiction of proceedings in this state brought by a trustee or beneficiary concerning the administration of a trust.
Any other court granted statutory equitable jurisdiction has concurrent jurisdiction with the chancery court in any proceedings in this state brought by a trustee or beneficiary concerning the administration of a trust.
The chancery court has concurrent jurisdiction with other courts of this state in other proceedings involving a trust.