| K Ikewaki (Tokio, JP) | P94 |
| Thomas Illig (Neuherberg) | P1184, V48 |
| Thomas Illmer (Dresden) | V808 |
| Christine Imelauer (München) | P174 |
| Armin Imhof (Ulm) | P1184, P82 |
| Beat Imhof (Genf, CH) | V58 |
| Hüseyin Ince (Rostock) | P934, P951, V1480, V75 |
| Giuseppe Inesi (Baltimore, US) | P668 |
| Nelly Iordanova (Vienna, AT) | V887 |
| Dirk Isbrandt (Münster) | V49 |
| Thomas Ischinger (München-Bogenhausen) | V1478 |
| Gerrit Isenberg (Halle) | V563 |
| Jeffrey Isner (Boston, US) | V901 |
| Carsten Israel (Frankfurt/Main) | P177, V1375, V518 |
| Wulf Ito (Hamburg) | V1451 |
| Wulf Ito (Hamburg) | P168, V58, V61 |
| Joseph Itskovitz-Eldor (Haifa, IL) | P1208 |
| Thomas-Heinz Ittel (Stralsund) | P374 |
| Jochen Ittner (Ulm) | P655, P656 |