The 22-year-old striker, born in Aubervilliers in the northeastern suburbs of Paris, previously represented France national football team at youth level but is now cleared to play for the Elephants after receiving approval from FIFA and confirmation from the French Football Federation, Africa football.com reported.
Ivory Coast head coach Emerse Fae moved quickly to secure the striker's commitment earlier this year, naming him in a preliminary squad for the friendly against South Korea on March 28 as part of his integration into the national setup.
Bonny is now fully eligible for Ivory Coast national football team selection as he targets a place at the global showpiece in Canada, Mexico and the United States next month.
The Chateauroux academy graduate has made steady progress at club level, featuring 44 times across all competitions for Inter Milan, registering seven goals and seven assists since joining from Serie A rivals Parma Calcio 1913 during the off-season.
With the World Cup approaching, Bonny will now look to strengthen his case for inclusion in Fae's final squad, with Ivory Coast drawn in Group E alongside Germany, Ecuador and debutants Curacao.