The list of ship decommissionings in 2005 includes a chronological list of all ships decommissioned in 2005.
| Operator | Ship | Flag | Class and type | Fate | Other notes | ||
|---|---|---|---|---|---|---|---|
| 17 February | Scrapped in 2006[1] | ||||||
| 15 March | Scrapped in 2006[2] | ||||||
| 23 March | Sunk as target[3] | ||||||
| 31 March | Type 23 frigate | Sold to Chile | |||||
| 31 March | Sunk as target | ||||||
| 29 June | Scrapped in 2011 | ||||||
| 8 July | Type 23 frigate | Sold to Chile | |||||
| 14 July | Type 42 destroyer (Batch 1) | Scrapped | |||||
| 3 August | Scrapped | ||||||
| 3 August | In use as office facility | ||||||
| 8 August | Sold to Bangladesh | ||||||
| 19 August | Sunk as target | ||||||
| 15 September | |||||||
| 27 September | Static training ship | ||||||
| 27 September | Sold to Lithuania | ||||||
| 27 September | Sold to Lithuania | ||||||
| 13 October | |||||||
| 14 October | Undergoing scrapping | ||||||
| 28 October | Sunk as a target ship in 2006 | ||||||
| 12 November | Awaiting conversion to dive wreck | ||||||
| 13 November | Sunk as dive wreck, was decommissioned 1999 | formerly | |||||
| 14 December |