2 Anti-Aircraft Regiment Hong Kong Singapore Artillery RA was formed in January 1939 with a Battery from 1 Anti-Aircraft Regiment HKSRA. The Regiment was captured at Singapore in February 1942 and disbanded in August 1946.
| Jan 39 | Formed from a battery from 1 Anti-Aircraft Regiment HKS RA | Singapore |
| Sep 39 | Malaya Command | Singapore |
| Aug 40 | Became 2 Heavy Anti-Aircraft Regiment HKS RA | Singapore |
| Feb 42 | Captured | Singapore |
Batteries
| Jan 39 | 11 |
| Jun 40 | 11, 12, 13 |
| Dec 40 | 11, 12, 13, 14 (LAA) |
| Sep 41 | 11, 12, 13 |