Bernard de Tramelay (died 16 August 1153) was the fourth Grand Master of the Knights Templar, serving from 1152 until his death at the Siege of Ascalon.

He was elected Grand Master in 1152, after the abdication of Everard des Barres, who had retired to the monastery at Clairvaux in France following the Second Crusade.

[1] King Baldwin III of Jerusalem granted him the ruined city of Gaza, which Bernard rebuilt for the Templars.

According to William of Tyre, knights of the Order rushed through the breach without Baldwin's knowledge while Bernard prevented other crusaders from following, as he did not want to share the spoils of the city with the king.

A few days later, Baldwin captured the fortress; shortly thereafter, the Templars elected André de Montbard as their Grand Master.