HMS Blanche (1800) was a 36-gun fifth rate launched in 1800 and captured and burnt in 1805 by four French ships off Puerto Rico.
HMS Blanche was a 38-gun fifth rate, previously the Spanish ship Amfitrite. She was captured by Sir Richard StrachaninHMS Donegal in 1804 and taken into service as HMS Amfitrite, and renamed HMS Blanche in 1805. She was wrecked off Ushant in 1807.