Atkinson is eligible to represent Belize at international level through his mother and received his first call-up for the Belize national team when being named in their squad for the 2017 Copa Centroamericana. He made his debut as a 59th-minute substitute in a 3–0 defeat to Costa Rica on 15 January 2017. He made his first start two days later in Belize's 3–1 loss to El Salvador, in which he was substituted on 47 minutes. Atkinson finished the 2017 Copa Centroamericana with two appearances as Belize were eliminated after finishing bottom in the standings.