The 2015 FIM CEV Moto3 Junior World Championship was the fourth CEV Moto3 season and the second under the FIM banner. The season was held over 12 races at 8 meetings, began on 26 April at Algarve and finished on 15 November at Valencia.

The 2014 FIM CEV Moto3 International Championship was the third CEV Moto3 season and the first under the FIM banner. Fabio Quartararo successfully defended his championship by winning nine out of the eleven races. By winning the championship, he secured himself a ride in Moto3 for 2015 – despite being under the minimum age limit – following a rule change in August 2014. Other race winners were María Herrera at Jerez, and series runner up Jorge Navarro at Albacete; Quartararo finished second in both races. Hiroki Ono finished the season in third place with four podiums.