HMS Ajax

{{Use dmy dates|date=September 2017}}

{{Use British English|date=September 2017}}

{{Italic title prefixed|3}}

Eight ships of the Royal Navy have been named HMS Ajax after the Greek hero Ajax:

• {{HMS|Ajax|1767}} was a 74-gun third-rate ship of the line launched in 1767 and sold in 1785.
• {{HMS|Ajax|1798}} was a 74-gun third rate launched in 1798. She fought at the Battle of Trafalgar in 1805 and was burned by accident in 1807.
• {{HMS|Ajax|1809}} was a 74-gun third rate launched in 1809. She was converted to screw propulsion in 1846 and broken up in 1864.
• HMS Ajax was a 78-gun third rate launched in 1835 as {{HMS|Vanguard|1835|6}}. She was renamed HMS Ajax in 1867 and was broken up in 1875.
• {{HMS|Ajax|1880}} was an {{sclass|Ajax|ironclad}} battleship launched in 1880 and sold in 1904.
• {{HMS|Ajax|1912}} was a {{sclass|King George V|battleship|0||1911}} battleship launched in 1912 and broken up in 1926.
• {{HMS|Ajax|22}} was a {{sclass|Leander|cruiser|0||1931}} light cruiser launched in 1934. She took part in the Battle of the River Plate and was broken up in 1949.
• {{HMS|Ajax|F114}} was a {{sclass|Leander|frigate}} launched in 1962 and broken up in 1988.
• {{HMS|Ajax|851F}} was an Admiralty barge built in 1956. She was moored at Jupiter Point on the Lynher River, Plymouth for seamanship training by {{HMS|Raleigh|shore establishment|6}} from 1987 to 2008.{{cite web|url=http://www.hmsajax.org/#/training-barge/4565337515|title=HMS AJAX|website=www.hmsajax.org|access-date=2016-07-10}}