Baldwin V of Flanders (died September 1, 1067) was Count of Flanders from 1036 to 1067.

He married Adela (Alix), daughter of King Robert II of France. From 1060 to 1067 he was the guardian for his nephew-by-marriage Philip I of France.

Baldwin and Adela had four children:

• Baldwin VI, 1030-1070
• Matilda, c.1031-1083 who married William the Conqueror
• Robert I of Flanders, c. 1033-1093
• Henry of Flanders c.1035