Quinlan Vos's holocron was a holocron made by Quinlan Vos. Prior to the Siege of Saleucami, it was given to him by Oppo Rancisis, who believed that Vos would benefit from recording his thoughts and feelings. Strangely, it was not shaped like a traditional cubic Jedi holocron, but rather like a pyramidal Sith holocron.
Vos kept it with him throughout the campaign on Saleucami and in the Battle of Kashyyyk, where, after Order 66, he used it to record his love for Khaleen Hentz. It made its way to her eight months later on Nar Shaddaa. She was reading it on Kashyyyk when Vos himself returned to her.