Baron St Helens is a British peerage title. It was first created in the Peerage of Ireland in 1791 for the Chief Secretary for Ireland, Alleyne Fitzherbert, who was granted another barony of the same name in the Peerage of the United Kingdom in 1801. At his death, both baronies became extinct. In 1964, the barony was created again; it was one of the last hereditary baronies ever created in the Peerage of the United Kingdom.

Barons St Helens, First and Second Creations (1791; 1801)

• Alleyne Fitzherbert, 1st Baron St Helens (1753-1839)

Barons St Helens, Third Creation (1964)

• Michael Henry Colin Hughes-Young, 1st Baron St Helens (1912-1980)
• Richard Francis Hughes-Young, 2nd Baron St Helens (b. 1945)