| Competition: | J.League Division 1 |
| Season: | 2013 |
| Winners: | Sanfrecce Hiroshima 2nd J. League title 7th Japanese title |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Sanfrecce Hiroshima Yokohama F. Marinos Kawasaki Frontale Cerezo Osaka |
| Relegated: | Oita Trinita Júbilo Iwata Shonan Bellmare |
| League Topscorer: | Yoshito Ōkubo (26 goals) |
| Matches: | 306 |
| Total Goals: | 879 |
| Highest Attendance: | 62,632 F. Marinos vs Albirex |
| Lowest Attendance: | 5,698 Júbilo vs Albirex |
| Average Attendance: | 17,226 |
| Prevseason: | 2012 |
| Nextseason: | 2014 |
The 2013 J.League Division 1 season was the 48th season of Japanese top-flight football and the 21st since the establishment of the J.League in 1992. The season began on 2 March and finished on 7 December.[1]
Sanfrecce Hiroshima are the defending champions.
Vissel Kobe, Gamba Osaka and Consadole Sapporo were relegated at the end of the 2012 season after finishing in the bottom three places of the table. Consadole Sapporo returned to J2 after only one season in the top flight, while Vissel Kobe was relegated after six seasons in the top flight. Gamba Osaka, instead, was relegated for the first time since the creation of J. League in 1993 and the first time since their forerunners, Matsushita Electric Soccer Club, were relegated to the second Division of the Japan Soccer League after the 1986–87 season.
The three relegated teams were replaced by 2012 J.League Division 2 champions Ventforet Kofu, runners-up Shonan Bellmare and sixth-placed and play-off winner team Oita Trinita. Kofu made an immediate return to the top division, while Shonan after a two-year absence. In the end, Oita beat JEF United Chiba in the playoff final and returned in J1 after three seasons in the second division. Due to Oita's promotion, it will be the first time to have 2 clubs in the top-flight league competitions from Kyushu since 2006, and Kansai region will have only one club competing in the top flight first time since 1994 season due to Kobe and Gamba's relegations.
| Month | Player | Club | |
|---|---|---|---|
| March |  Shunsuke Nakamura[2] | Yokohama F. Marinos | |
| April |  Zlatan Ljubijankič | Omiya Ardija | |
| May | Yoichiro Kakitani | Cerezo Osaka | |
| June | N/A[3] | ||
| July | Shusaku Nishikawa | Sanfrecce Hiroshima | |
| August | Yuya Osako | Kashima Antlers | |
| September | Aria Jasuru Hasegawa | FC Tokyo | |
| October | Tetsuya Enomoto | Yokohama F. Marinos | |
| November | Yoshito Ōkubo | Kawasaki Frontale | |
