HNLMS Alkmaar (Dutch: Hr.Ms. or Zr.Ms. Alkmaar) may refer to the following ships of the Royal Netherlands Navy that have been named after Alkmaar:
- HNLMS Alkmaar (1874), a unique screw sloop
- HNLMS Alkmaar (M850), the lead ship of her class of minehunters
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.