["Japanese Psychological Research, EarlyView. ", "\nAbstract\nWe often face situations requiring us to exert self‐control, wherein we set goals and invest plenty of effort in achieving them, but are also disturbed by urges to give in to temptations. Since self‐control is associated with outcomes across various domains, it is important to assess individual domain‐specific differences in self‐control to further understand how it develops and contributes to successful outcomes. The present study aimed to develop and validate the Japanese version of the Delaying Gratification Inventory, a well‐developed measure for assessing one's ability to delay gratification in five domains: food, physical pleasures, social interactions, money, and achievement. We created the Delaying Gratification Inventory in Japanese (DGI‐J) using back translation. We conducted surveys to test its validity using two discrete samples: crowd‐workers and university students. Our results showed that the DGI‐J is a valid measure for assessing self‐control in the abovementioned domains, except for the internal consistency for the Physical subscale. We also created a 10‐item short form of the DGI‐J from an item‐response theory perspective and tested its validity. We discuss how the DGI‐J can contribute to the literature on self‐control.\n"]