Obsessive-compulsive personality disorder (OCPD) is a personality disorder characterized by excessive perfectionism and a need for control over one's environment. People with OCPD tend to be reliable and orderly, but also inflexible and unable to surrender control. This makes it hard for people with this condition to express their feelings, have close relationships, and enjoy their successes.

Unlike many other mental health disorders, people with personality disorders are not aware that their thought and behavior patterns are inappropriate. OCPD is different from Obsessive-Compulsive Disorder , and it is not associated with the unwanted repetitive thoughts and behaviors characteristic of OCD.