List of Famous people named Reginar

Reginar II (890–932) was Lotharingian magnate who was active from approximately 915 to 932. He was brother of Duke Gilbert of Lotharingia, who died at the Battle of Andernach in 939, and because his son and grandson claimed it, he probably already personally held the fort of Mons in Hainaut as the seat of a county.

Reginar IV, Count of Mons, in Hainaut, was the son of Reginar III who died before 943. Lambert I of Leuven was his brother.

Reginar Longneck or Reginar I, Latin: Rainerus or Ragenerus Longicollus, was a leading nobleman in the kingdom of Lotharingia, variously described in contemporary sources with the titles of count, margrave, missus dominicus and duke. He stands at the head of a Lotharingian dynasty known to modern scholarship as the Reginarids, because of their frequent use of the name "Reginar".

Reginar III was a Count of Hainaut from approximately 940 until his exile in 958.

Reginar V, Count of Mons, 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.