A versatile and highly experienced defender, Adil Khan, who hails from Goa, made his debut for the senior national team in 2012 in an international friendly against Azerbaijan. He endured a career-threatening injury in the 2015-16 season and fought his way back into the reckoning, making his comeback for the Blue Tigers in the King's Cup 2019 against Thailand, where he kept a clean sheet and assisted the winning goal. In October 2019, he scored his first-ever senior national team goal against Bangladesh in Kolkata in a 2022 World Cup qualifier.