Topic
- Deep Impact became an undefeated Triple Crown horse.
- Cesario won the Japanese and American Oaks.
- Sweep Tosho won the Takarazuka Kinen for the first time in 39 years for a filly.
- Their Majesties the Emperor and Empress attended the Tenno Sho (Autumn).
It was the first time in 106 years that their Majesties the Emperor and Empress came to the racecourse to watch a horse race.
Heavenly Romance became the first filly to win a Tenno Sho in eight years since Air Groove. - Kashiwa Kinen promoted to a G1 race.
- In the dirt races, Kane Hekili showed great performance.
Flat-G1 races held by JRA
| Races | Track | age / (Colt Filly Gelding) | 1st |  |
| February Stakes | Tokyo D1600 |
over 4 / CFG | Meisho Bowler | ◆ |
| Takamatsunomiya Kinen | Chukyo T1200 |
over 4 / CFG | Admire Max | ◆ |
| Oka Sho | Hanshin T1600 |
3 / F | Rhein Kraft | ◆ |
| Satsuki Sho | Nakayama T2000 |
3 / CF | Deep Impact | ◆ |
| Tenno Sho (Spring) | Kyoto T3200 |
over 4 / CF | Suzuka Mambo | ◆ |
| NHK Mile Cup | Tokyo T1600 |
3 / CF | Rhein Kraft | ◆ |
| Yushun Himba (Japanese Oaks) | Tokyo T2400 |
3 / F | Cesario | ◆ |
| Tokyo Yushun (Japanese Derby) | Tokyo T2400 |
3 / CF | Deep Impact | ◆ |
| Yasuda Kinen | Tokyo T1600 |
over 3 / CFG | Asakusa Den’en | ◆ |
| Takarazuka Kinen | Hanshin T2200 |
over 3 / CFG | Sweep Tosho | ◆ |
| Sprinters Stakes | Nakayama T1200 |
over 3 / CFG | Silent Witness (HKG) | ◆ |
| Shuka Sho | Kyoto T2000 |
3 / F | Air Messiah | ◆ |
| Kikuka Sho | Kyoto T3000 |
3 / CF | Deep Impact | ◆ |
| Tenno Sho (Autumn) | Tokyo T2000 |
over 3 / CF | Heavenly Romance | ◆ |
| Queen Elizabeth II Cup | Kyoto T2200 |
over 3 / F | Sweep Tosho | ◆ |
| Mile Championship | Kyoto T1600 |
over 3 / CFG | Hat Trick | ◆ |
| Japan Cup Dirt | Tokyo D2100 |
over 3 /CFG | Kane Hekili | ◆ |
| Japan Cup | Tokyo T2400 |
over 3 / CFG | Alkaased (UK) | ◆ |
| Hanshin Juvenile Fillies | Hanshin T1600 |
2 / F | T.M. Precure | ◆ |
| Asahi Hai Futurity Stakes | Nakayama T1600 |
2 / CF | Fusaichi Richard | ◆ |
| Arima Kinen | Nakayama T2500 |
over 3 / CFG | Heart’s Cry | ◆ |
J・G1 races (Steeplechase)
| Races | Track | age / (Colt Filly Gelding) | 1st | |
| Nakayama Grand Jump | Nakayama J4250 |
over 4 / CFG | Karasi (AUS) | ◆ |
| Nakayama Daishogai | Nakayama J4100 |
over 4 / CFG | T.M. Dragon | ◆ |
G1 races held by NAR
| Races | Track | age / (Colt Filly Gelding) | 1st | |
| Kawasaki Kinen | Kawasaki D2100 |
over 4 / CFG | Time Paradox | G |
| Kashiwa Kinen | Funabashi D1600 |
over 4 / CFG | Strong Blood | G |
| Teio Sho | Ohi D2000 |
over 4 / CFG | Time Paradox | G |
| Japan Dirt Derby | Ohi D2000 |
3 / CFG | Kane Hekili | G |
| Derby Grand Prix | Morioka D2000 |
3 / CFG | Kane Hekili | ◆ |
| Mile Championship Nambu Hai | Morioka D1600 |
over 3 / CFG | Utopia | ◆ |
| JBC Sprint | Nagoya D1400 |
over 3 / CFG | Blue Concorde | ◆ |
| JBC Classic | Nagoya D1900 |
over 3 / CFG | Time Paradox | ◆ |
| Zen-Nippon Nisai Yushun | Kawasaki D1600 |
2 / CFG | Grace Tiara | G |
| Tokyo Daishoten | Ohi D2000 |
over 3 / CFG | Adjudi Mitsuo | ◆ |
JRA Award
| Horse of the Year | Deep Impact |
| Best Two-Year-Old Colt | Fusaichi Richard |
| Best Two-Year-Old Filly | T.M. Precure |
| Best Three-Year-Old Colt | Deep Impact |
| Best Three-Year-Old Filly | Cesario |
| Best Older Male Horse | Heart’s Cry |
| Best Older Filly or Mare | Sweep Tosho |
| Best Sprinter or Miler | Hat Trick |
| Best Dirt Horse | Kane Hekili |
| Best Steeplechase Horse | T.M. Dragon |
| Best Horse By Home-bred Sire | Cesario |
| Leading sire in Japan | Sunday Silence |
| ← 2004 | All | 2006 → |