The name is spelled Adán in Spanish:
Adan Ahmed Elmi, the fourth and current Prime Minister of Somaliland
Adán Amezcua Contreras, a leader of the Mexican Colima drug cartel
Adán Balbín, Peruvian football (soccer) player
Adán Cárdenas, Nicaraguan politician and doctor
Adán Chávez, elder brother of Venezuelan president Hugo Chávez
Adan Jodorowsky, French actor and musician
Adan Keynan Wehiye, Kenyan politician
Adán Martín Menis, former president of the Canary Islands
Adan Mohamed Nuur Madobe, Somali politician and Speaker of Parliament
Adán Sánchez, popular Mexican-American singer
Adán Vergara, Chilean football (soccer) player