The Lord High Steward or Lord High Justiciar was a highly prominent member of the Swedish Privy Council from the 13th century until 1809, excluding periods when the office was out of use.

Bo Jonsson (Grip) (early 1330s – 20 August 1386) was head of the royal council and marshal under the regency of Magnus IV of Sweden. Also in the council was his friend and colleague, Karl Ulfsson av Ulvåsa, eldest son of Saint Birgitta. From 1369, during Albert of Sweden’s reign, he was Officialis Generalis (the king's highest official) and from 1371 Lord High Steward (drots in Swedish).