HMS Horatius was a Nike-class battlecruiser of the Royal Manticoran Navy.
Completed in 1921 PD and commanded by Captain Agafia Duchovny, she was assigned to First Division, Battlecruiser Squadron 106, and was sent to the Talbott Quadrant. Horatius fought at the Second Battle of New Tuscany and the Battle of Spindle. (SI2, HH12)