Reginar V | |
|---|---|
| Count of Mons | |
| Born | 995 |
| Died | 1039 (aged 44) |
| Noble family | House of Reginar |
| Spouse(s) | Mathilde of Verdun |
| Issue | Herman, Count of Hainaut |
| Father | Reginar IV, Count of Mons |
| Mother | Hedwig of France |
Reginar V (c. 995–1039), was the eldest son of Reginar IV, Count of Mons and Hedwig of France. His maternal grandparents were Hugh Capet of France and Adelaide of Aquitaine.
Reginar inherited his father's precarious position as count of Mons, which was a part of Hainaut, and through his marriage to a member of his family's traditional enemies, the House of Ardenne, he not only consolidated that position, but also gained comital status in the neighbouring southwestern part of Brabant. This included the frontier fort at Ename which faced the powerful County of Flanders in the Kingdom of France, who had taken control of the western part of Hainaut in Valenciennes.