| Navy | The Royal Navy |
| Type | Light cruiser |
| Class | E |
| Pennant | D 66 |
| Built by | Armstrong (Newcastle-on-Tyne, U.K.) : Wallsend |
| Ordered | |
| Laid down | 23 Sep, 1918 |
| Launched | 19 May, 1920 |
| Commissioned | 14 Jan, 1926 |
| End service | |
| Loss position | |
| History | Sold to be broken up for scrap on 23 July 1948. Arrived at Troon to be scrapped by Arnott Young on 5 July 1948. Commanding Officers: Capt. Francis Cyril Flynn, RN HMS Emerald was in Dockyard Control during refit Capt. Francis James Wylie, RN Capt. R.W.M. Lloyd, DSO, RN (retired) Capt. Wilfred Pearse Gandell, CBE, RN (retired) |
| Noteable events involving Emerald include: 10 Oct, 1940 |

