Godfrey I (Dutch: Godfried, c. 1060 – 25 January 1139), called the Bearded, the Courageous, or the Great, was the Landgrave of Brabant, Count of Brussels and Leuven (Louvain) from 1095 to his death and Duke of Lower Lorraine from 1106 to 1129.

In 1099, Emperor Henry IV allotted the county to the bishop, who entrusted it to Albert III, Count of Namur.

Godfrey arbitrated a dispute between Henry III of Luxembourg and Arnold I, Count of Loon, over the appointment of the abbot of Sint-Truiden.

After the death of the emperor in 1106, his son and successor, Henry V, who had been in rebellion, decided to avenge himself on his father's partisans.

By marrying his daughter Adeliza to Henry I of England, who was also the father-in-law of the emperor, he greatly increased his prestige.

However, Henry V died in 1125 and Godfrey supported Conrad of Hohenstaufen, the duke of Franconia, against Lothair of Supplinburg.

Nonetheless, Godfrey maintained the margraviate of Antwerp and retained the ducal title (which would in 1183 become Duke of Brabant).