Purpose: This study aimed to know the impact of executive functions on the performance of instrumental activities of daily living in Parkinson disease (PD). Methods: A cross-sectional descriptive study was conducted with 94 participants (64 PD and 30 controls). Results: The poor inhibitory control and verbal fluency in PD could be related to their performance on instrumental activities of daily living as poorer executive performance directly influences the motor and process skills needed to perform instrumental activities of daily living. Conclusion: Our results suggest that rehabilitation activities for these executive tasks could be of interest for the performance of PD patients.