| Surname | First name | Pseudonym | Year of birth | Fond No. | Inventory No. | File No. |
|---|---|---|---|---|---|---|
| German | Irmgard Valtraut | - | 1935 | V-135 | 7 | 331 |
| German | Irving | - | 1910 | K-1 | 60 | 12712 |
| German | Isak | - | 1898 | V-147 | 49 | 1 |
| German | Ivan | - | 1919 | K-1 | 61 | 71 |
| German | Ivan | - | - | V-147 | 49 | 2 |
| German | Ivan | - | - | V-4 | 2 | 2 |
| German | Izabelė | - | 1914 | K-1 | 59 | 17903 |
| German | Jakov | - | 1908 | K-1 | 60 | 13619 |
| German | Jakov | - | 1908 | L-3 | 4 | 1 |
| German | Jan | - | - | K-1 | 61 | 71 |
| German | Jania | - | - | 3435 | 59 | 157 |
| German | Januš | - | 1927 | K-1 | 61 | 88 |
| German | Jefim | - | 1928 | K-1 | 61 | 2 |
| German | Jelizaveta | - | 1953 | L-3 | 4 | 1 |
| German | Jogan | - | 1906 | L-3 | 4 | 1 |
| German | Josif | - | 1900 | V-135 | 3 | 6 |
| German | Josif | - | 1900 | K-15 | 1 | 293 |
| German | Julij | - | 1873 | K-15 | 1 | 291 |
| German | Jurij | - | - | 3406 | 29 | 38 |
| German | Jurij | - | 1955 | K-1 | 60 | 27511 |
