Berenguer Ramon II the Fratricide was Count of Barcelona 1076-1097. He was the son of Ramon Berenguer I, and initially ruled jointly with his twin brother Ramon Berenguer II.

Born in 1053 or 1054 he succeeded his father Ramon Berenguer I the Old to co-rule with his twin brother Ramon Berenguer, in 1075. The twins failed to agree and divided their possessions between them, against the will of their late father. Ramon Berenguer II was killed while hunting in the woods on December 5, 1082. His brother, who went on to become the sole ruler of Catalonia, was credited by popular opinion of having orchestrated this murder.

In the 1080s Berenguer Ramon's involvement in the internal strife in the Moorish taifa kingdoms brought him in conflict with Cid. In the ensuing war the Count of Barcelona was twice taken prisoner.

His life in the 1090s is obscure. Some Catalan nobles are said to have accused him of his brother's assassination before King Alfonso VI of Castile. It is also said that his guilt was determined by trial by combat, which he lost. After that he went to Jerusalem, either on pilgrimage or as part of the First Crusade, and perished there between 1097 and 1099. Berenguer Ramon II was succeeded by his nephew Ramon Berenguer III, son of Ramon Berenguer II.