Naoko Fujioka has three losses against three opponents on her boxing record. For a list of Fujioka's best fights, refer to "Best fights of Naoko Fujioka".
On April 9, 2022 Naoko Fujioka, the WBA champion, met Marlen Esparza, the WBC and The Ring champion, in a flyweight world-title unification fight. Fujioka was 46 years old and with a record of 19-3-1 (7), and Esparza was 32 years old and with a record of 10-1 (1). Fujioka lost the fight via 10-round unanimous decision and lost her title.
On October 1, 2016 Naoko Fujioka fought Jessica Chávez in a flyweight world-title fight for Chávez' WBC title. Fujioka was 41 years old and with a record of 15-2 (6). Fujioka lost the fight via 10-round unanimous decision.
On November 8, 2014 Naoko Fujioka fought Susi Kentikian in a flyweight world-title fight for Kentikian's WBA title. Fujioka was 39 years old and with a record of 12-1 (6). Fujioka lost the fight via 10-round unanimous decision.
