The list of ship commissionings in 1990 includes a chronological list of all ships commissioned in 1990.
| Operator | Ship | Flag | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|---|
| 25 April |  Royal Netherlands Navy | Zeeleeuw | Walrus-class submarine | S803 | ||
| December |  People's Liberation Army Navy | Changzheng 5 | Type 091 submarine | 405 | Date of initial operational capability |
| Ship events in 1990 | |||||||||||
| Ship launches: | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 |
| Ship commissionings: | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 |
| Ship decommissionings: | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 |
| Shipwrecks: | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 |
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