Eight ships of the Royal Navy have been named HMS Beagle, after the beagle (a type of dog). All are obscure except for the second Beagle, 1820–1870, that transported Charles Darwin around the world.

• The first Beagle was a Cruizer-class brig-sloop in service from 1804 to 1814.
• The second Beagle was a 10-gun Cherokee class brig-sloop , launched in 1820, converted to a survey ship in 1825, a customs watchvessel in 1846, and sold in 1870.
• The third Beagle was a wooden-hulled screw gunboat launched in 1854 and sold in 1863, eventually becoming the Japanese vessel Kanko.
• The fourth Beagle was a 1-gun schooner serving in Sydney from 1872 to 1883.
• The fifth Beagle was a sloop in service from 1889 to 1905.
• The sixth Beagle was a destroyer, the lead ship of her class, launched in 1909 and sold in 1921
• The seventh Beagle (H30) was a B-class destroyer launched in 1930 and broken up in 1946.
• The eighth Beagle (H319) was a Bulldog-class hydrographic survey ship launched in 1967 and sold in 2002.