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See also: hm, .hm, h'm, H.M., ḥm, and ḫm




  1. The ISO 3166-1 two-letter (alpha-2) code for Heard Island and McDonald Islands.


Alternative forms[edit]


HM (plural HMs)

  1. Initialism of His Majesty. (the title of a king)
  2. Initialism of Her Majesty. (the title of a queen)
  3. (military, US) Abbreviation of hospital corpsman.

Usage notes[edit]

  • Similarly, when HMG is used in the possessive (to mean "His/Her Majesty's Government's"), it is written HMG, not HMG's.
  • 2018 June 11, HM Government, “HMG personnel security controls”, in[2], London, archived from the original on 2021-10-26, retrieved 2021-11-08:
    HMG personnel security controls... This booklet describes the government's personnel security...
  • HM is used both to save space and—especially in uses difficult to change, like signage—to avoid having to change it in the event of the death of a monarch changing His Majesty's to Her Majesty's or vice versa.
  • 2021 October 30 (last accessed), HM Passport Office, “HM Passport Office”, in[3], London, archived from the original on 2021-10-27:
    HM Passport Office is the sole issuer of UK passports and responsible for civil registration services through the General Register Office.

Related terms[edit]



  1. ^ HM Passport Office (accessed 2021-10-30), “HM Passport Office”, in[1], London, archived from the original on 2021-10-27, top-of-page banner logotype: “HM Passport Office”


Alternative forms[edit]



  1. (title of a queen) Initialism of Hare Majesteit.