Records held by the NZSIS
| 1919 – 1941 | New Zealand Police: security intelligence records |
| 1941 – 1945 | Security Intelligence Bureau (established by military; operating under Police control 1943 – 1945): all records |
| 1945 – 1949 | New Zealand Police: security intelligence records |
| 1949 – 1956 | New Zealand Police Special Branch: most records |
| 1956 – 1969 | New Zealand Security Service: all records |
| 1969 to date | New Zealand Security Intelligence Service: all records |
