HMS Achilles was a Homer-class battlecruiser of the Royal Manticoran Navy.

In 1905 PD, the Achilles was originally part of Battlecruiser Squadron 15 and commanded by Captain Oscar Weldon, the ship was transferred to Battlecruiser Squadron 5 as Commodore Isabella Banton's flagship for the second division. Soon after, she was destroyed with all hands by Havenite missile fire in the First Battle of Hancock. (HH3)