Oklahoma National History Day is more than an academic exercise for thousands of Oklahoma junior high and high school students; it is a tradition.

The 2026 OkNHD State Contest will be held in person at the Oklahoma History Center on Wednesday, May 6, and Thursday, May 7. The junior division contest will be on Wednesday, May 6, and the senior division contest will be on Thursday, May 7. Awards will be given each day at 2:30 p.m.

Due to the size of the OkNHD event, there will be some Oklahoma History Center gallery closures on May 6 and 7. Please call ahead to 405-522-0765 to ensure that exhibits are open for visitors.

Following the awards assembly, students will have a brief mandatory meeting before proceeding to the National Contest.

Register for the OkNHD State Contest.

Contest Information

• Registration fees are $15 per student, payable by check or purchase order (PO), and must be postmarked by April 15. Payment may be mailed to:
  Oklahoma National History Day
  Oklahoma History Center
  800 Nazih Zuhdi Drive
  Oklahoma City, OK 73105
• All students must register separately for group projects.
• Late registrations will incur a $25 late fee in addition to the registration fee.
• If using a PO, please include the PO number where registration asks for your check number.

For Assistance

Contact the OkNHD staff at [email protected]

Oklahoma National History Day is made possible through the support of numerous organizations and foundations. Learn more about the contest and our sponsors on our History Day page.