This is a list of Earls (Suo jure or jure uxoris) during the reign of Henry IV of England who reigned from 1399 to 1413.
The period of tenure as Earl is given after the name and title(s) of each individual, including any period of minority.
Earl of Dorset (Second creation)
Earl of Huntingdon (Fourth creation)
Earl of Kent (Sixth creation)
Earl of Norfolk (Third creation)
Earl of Nottingham (Second creation)
Earl of Richmond (Second creation restored)
Earl of Salisbury (Second creation)
Earl of Somerset (Second creation)
Earl of Suffolk (Third creation)
Ellis, Geoffrey. (1963) Earldoms in Fee: A Study in Peerage Law and History. London: The Saint Catherine Press, Limited.