Barrington Dacres (died 25 October 1806) was an officer of the Royal Navy, who saw service during the French Revolutionary and Napoleonic Wars. He eventually rose to the rank of Post-Captain. He did not see action in many significant engagements, and is chiefly remembered for the accidental loss of his ship to the French, and for the unsuccessful chase of two French ships in the English Channel. He did command a number of ships of the line under several of the leading naval commanders of his time. His early death though prevented him from achieving the same seniority and degree of fame as his relatives did.