Thomas Plunket (died in 1851 or 1852) was an Irish soldier in the British army 95th Rifles regiment. He served throughout the Peninsular War and later in the Hundred Days campaign of 1815. He is remembered for a feat at the Battle of Cacabelos during Moore's retreat to Corunna in 1809. Here Plunket shot the French Général de Brigade Auguste-Marie-François Colbert at a range of around 600 metres using a Baker rifle.