Reginald II, Count Palatine of Burgundy and Count of Mâcon, Vienne and Oltingen, was born in 1061; he was the eldest son of William I of Burgundy and brother to Stephen I of Burgundy, his successor, as well as to Pope Callixtus II.
He succeeded to the County, aged 25, on his father's death in 1087, also gaining the title of Count of Mâcon.
From his wife, the Countess Regina of Oltingen, he inherited—among others—the title of Count of Oltingen, they were the parents of William II of Burgundy.
The place and date of his death is uncertain, as is his potential participation in the First Crusade. His death is dated either to 1095, prior to the First Crusade or to circa 1102 in the Holy Land along with his brothers Stephen I and Hugh, archbishop of Besançon.