| Ryuju Nagayama | |
| Native Name: | 永山竜樹 |
| Birth Date: | 15 April 1996 |
| Birth Place: | Bibai, Hokkaido, Japan |
| Height: | 158 cm |
| Country: | Japan |
| Weight Class: | 60 kg |
| Olympics Rank: | 3 |
| Olympics Year: | 2024 |
| Olympics Weight: | Men's 60 kg |
| Worlds Rank: | 3 |
| Worlds Year: | 2018 |
| Worlds Weight: | Men's 60 kg |
| Worlds Year2: | 2019 |
| Worlds Weight2: | Men's 60 kg |
| Regionals Type: | AS |
| Regionals Rank: | 1 |
| Regionals Year: | 2022 |
| Updated: | 5 August 2024 |
Ryuju Nagayama (; born 15 April 1996) is a Japanese judoka.[1] He won one of the bronze medals in the men's 60kg event at the 2024 Summer Olympics held in Paris, France.[2]
Nagayama participated at the 2018[3] and 2019 World Championships, winning bronze medals in both.