Ralph Chandler (23 August 1829 – 9 February 1889) was a rear admiral of the United States Navy.

After a tour of duty at the Naval Academy in 1852, he served in the sloop St. Louis in the Mediterranean Squadron till 1855, in which year he became successively master and lieutenant.

The next year he was assigned to the steam-sloop San Jacinto of the North Atlantic Blockading Squadron, in which he was present at the engagement with the Sewell's Point batteries and the capture of Norfolk, Virginia.

[1] On 16 July 1862, he was promoted to lieutenant-commander and commanded the screw steamer Huntsville in the East Gulf Blockading Squadron.

Transferred to the steam-gunboat Maumee of the North Atlantic Squadron, Chandler fought his ship at the bombardment and fall of Fort Fisher and the capture of Wilmington in early 1865, receiving promotion to commander on 25 July 1866.