3 Anti-Aircraft Z Regiment RA was formed in September 1940 with four batteries in 3 Anti-Aircraft Division. The Regiment disbanded in April 1945.
| Sep 40 | Formed | ||
| Sep 40 |  |
3 Anti-Aircraft Division | UK |
| Oct 42 |  |
6 Anti-Aircraft Group | UK |
| Apr 44 | |
Became 3 Anti-Aircraft Area Mixed Regiment | Edinburgh, UK |
| Apr 45 | Disbanded |
Batteries
| Sep 40 | 103, 107, 115, 118 |
| Aug 41 | 107, 115, 118 |
| Dec 41 | 107, 115, 118, 191 |
| Oct 42 | 208, 217, 218 |
| Dec 42 | 118, 208, 217, 218 |
Batteries manned by Home Guard
Battery |
Home Guard Unit |
Date from |
| 118 Battery | 101 Aberdeenshire (Mixed) | Nov 42 |
| 208 Battery | 101 City of Edinburgh (Mixed) | Jul 42 |
| 217 Battery | 102 City of Edinburgh (Mixed) | Aug 42 |
| 218 Battery | 101 County of Dundee (Mixed) | Aug 42 |