The 2026 ATP Official Rulebook — the regulations governing men's professional tennis at the highest level.
| Year | 2026 |
| Length | 210 pages |
| Publisher | ATP Tour, Inc. — a body independent of the International Tennis Federation |
Men's professional tennis is not governed by the International Tennis Federation; the ATP Tour is a separate body with its own regulations. For a player competing in ATP tournaments, the text governing contracts, discipline, entry, prize money and rankings is this rulebook, not the Federation's regulations. The International Tennis Federation publishes this rulebook alongside its own documents.
The Tennis Anti-Doping Programme and the Tennis Anti-Corruption Program also govern ATP players — both are administered by the International Tennis Integrity Agency across all governing bodies. The Code of Conduct for officials is likewise a document shared by all four governing bodies.