Rigunth (or Rigundis) (c. 569–after 589) was a daughter of the Merovingian King Chilperic I.
Rigunth was the eldest child and only recorded daughter of Chilperic and Fredegund. About 583, she was betrothed to Recarede, eldest son of Leovigild, King of the Visigoths. In September 584 she was sent to Spain in a convoy with a large treasure as dowry. During the journey King Chilperic died and the soldiers escorting the princess took everything they could steal and fled. At Toulouse, Duke Didier seized what was left. The princess was returned to her mother in 585.
She took refuge with her mother and led a debauched life. She often quarreled with her mother who failed in an attempt to kill her in 589. Her date of death is unknown.