HMS Princess Louisa
Three ships of the Royal Navy have borne the name HMS Princess Louisa, after Princess Louisa:
- fifth rate launched as HMS Launcestonin 1711. She was rebuilt in 1728 and renamed HMS Princess Louisa. She was wrecked in 1736.
- fourth rate launched as HMS Swallowin 1732 and broken up in 1742.
- HMS Princess Louisa (1744) was a 60-gun fourth rate launched in 1744 and broken up by 1766.