RMS Alaunia may refer to:
- RMS Alaunia (1913), a British ocean liner launched in 1913 and sunk in 1916
- RMS Alaunia (1925), a British ocean liner launched in 1925 and scrapped in 1957
- RMS Alaunia (1960), a British cargo liner launched in 1960
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.