HMS M4
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HMS M4 may refer to the following ships of the Royal Navy:
- {{ship|HMS|Roberts|1915}}, a monitor originally named M4
- {{ship|HMS|M4|1919}}, the fourth M-class submarine
See also
- {{ill|HSwMS M4 (1940)|lt=HSwMS M4 (1940)|sv|HMS M4}} ({{langx|sv|HMS M4}}), a Swedish Royal Navy M-type minesweeper; see List of mine warfare vessels of the Swedish Navy
- HSwMS Carlskrona (M04) (1980) ({{langx|sv|HMS M4}}), a Swedish Royal Navy minelayer
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