The list of ship decommissionings in 1970 includes a chronological list of ships decommissioned in 1970.
| Date | Operator | Ship | Flag | Class and type | Fate | Other notes | |
|---|---|---|---|---|---|---|---|
| 15 January | amphibious assault ship | Scrapped | [1] | ||||
| 30 January | Scrapped | ||||||
| 6 July | Siljarederiet | Ferry | Sold to Svea Line (Finland) | Continued in Silja Line traffic | |||
| 6 August | Scrapped | Reserve until stricken in 1989 | |||||
| 26 June | Museum ship | Naval Air Station Alameda | |||||
| 27 June | Museum ship | Patriot's Point, South Carolina | |||||
| 3 July | Scrapped in 1971 |