HMS Antrim was a 10,850 ton Devonshire-class armoured cruiser of the British Royal Navy, built by John Brown & Company and launched on 8 October 1903. Like her sisters, she served in the First World War and survived. After the war she became the first ship to be fitted with an experimental sonar system in 1920. She was sold on 19 December 1922 to Hughes Bolckow, and arrived at Blyth in March 1923 for breaking up.