| Japan | |
|---|---|
 | |
| Captain | Go Soeda |
| ITF ranking | 30  (18 March 2024) |
| Colors | Red & White |
| First year | 1921 |
| Years played | 89 |
| Ties played (W–L) | 201 (111-90) |
| Years in World Group | 13 (3–14) |
| Runners-up | 1 (1921) |
| Most total wins | Takao Suzuki (41–23) |
| Most singles wins | Tsuyoshi Fukui (27–12) Takao Suzuki (27–12) |
| Most doubles wins | Takao Suzuki (14–11) |
| Best doubles team | Satoshi Iwabuchi / Takao Suzuki (9–5) |
| Most ties played | Takao Suzuki (31) |
| Most years played | Takao Suzuki (15) |
The Japan men's national tennis team represents Japan in Davis Cup tennis competition and is governed by the Japan Tennis Association.
Japan first competed at the Davis Cup in 1921, where they finished as runners-up. They were an inaugural member of the World Group in 1981 and competed at the top division until 1985 when they were relegated to the second division. They are currently competing in the World Group for the eighth time.