In a report published on Friday, Hengaw said the executions were carried out on various charges, including political and religious offences, murder, drug-related crimes, rape, and armed robbery.
According to the group, only 19 of the executions were officially acknowledged by Iranian authorities. At least 17 prisoners were reportedly executed in secret, without notifying their families.
The report also highlighted that 16 political prisoners were executed in June on charges of “spying for Israel.”
Hengaw noted that two women were among those executed during the month, one in Qom and another in Ghezel Hesar prison in Karaj. One was convicted of affiliation with religious groups, while the other faced the death penalty for premeditated murder.
The rights group previously reported that at least 617 people, including 40 Afghan nationals, were executed in Iran during the first half of 2025.
Hengaw expressed grave concern over the rise in executions, arbitrary arrests, systemic violence, and other human rights violations across the country. The organisation called on the international community to increase pressure on Iranian authorities to halt the escalating use of capital punishment.