Kenedy is of Irish origin and means "son of Cennedig". It is derived from the old Irish name Cennétig, which was borne by several historical figures including a 10th-century king of Munster. The name Kenedy is associated with strength and leadership due to its historical significance. It gained popularity in the United States during the mid-20th century and has since been used as both a given name and a surname.
The name Kenedy had a dip in popularity between 2003 and 2005, with only half the number of births occurring in that year compared to the surrounding years. However, it rebounded slightly by 2007. Overall, there were a total of 20 babies named Kenedy born during these three years.