| 2018 Top Challenge League | |
|---|---|
| Countries | Japan |
| Date | 8 September – 9 December 2018 |
| Champions | NTT DoCoMo Red Hurricanes (3rd title) |
| Runners-up | Mitsubishi Sagamihara DynaBoars |
| Matches played | 40 |
| Tries scored | 332 (average 8.3 per match) |
The 2018 Top Challenge League was the second season of Japan's second-tier domestic rugby union competition, the Top Challenge League.[1]
It was played from 8 September to 9 December 2018, with eight participating teams. NTT DoCoMo Red Hurricanes won the competition for the third time – having previously won in 2010–11 and 2016–17 and qualified for the promotion play-offs, along with Mitsubishi Sagamihara DynaBoars, Kintetsu Liners and Kurita Water Gush. Kamaishi Seawaves and Chugoku Red Regulions finished seventh and eighth respectively to qualify for the relegation play-offs.