The title Baron Verulam was created in two separate and unrelated instances, first in the Peerage of England then in the Peerage of Great Britain. It was firstly created for the English philosopher and statesman Sir Francis Bacon (who was later created Viscount St Albans), and secondly created for the Viscounts Grimston (who were in the Peerage of Ireland). The first creation became extinct upon Bacon's death in 1626, while the second creation is still extant.

Barons Verulam, First Creation (1618)

• Francis Bacon, 1st Baron Verulam (1561-1626), became Viscount St Albans in 1621

Barons Verulam, Second Creation (1790)

• James Bucknall Grimston, 3rd Viscount Grimston (1747-1808)
• James Walter Grimston, 4th Viscount Grimston (1775-1845), became Earl of Verulam in 1815
• see Earl of Verulam for further holders