HMS Ark Royal is a name that has been borne by five ships in the British Royal Navy.

HMS Ark Royal (R07), the last Invincible-class light aircraft carrier to be completed, is the fifth ship of the Royal Navy named in honour of the flagship of the English fleet that defeated the Spanish Armada.

HMS Ark Royal (91), was the third ship of the Royal Navy to carry the name and the second to be an aircraft carrier. She was designed in 1934 to meet the limits of the Washington Naval Treaty, and was built by Cammell Laird and Company, Ltd. at Birkenhead, England. Construction was completed in November 1938.

HMS Ark Royal (R09) was an Audacious-class aircraft carrier of the British Royal Navy and, when she was decommissioned in 1978, was the Royal Navy's last remaining conventional catapult and arrested-landing supercarrier.

HMS Ark Royal was a Royal Navy ship originally laid down as a merchant vessel but completed in the builder's shipyard as an aircraft carrier, entering service a few months after the outbreak of the First World War. She was renamed HMS Pegasus in 1934.