Blyttia

Blyttia may refer to:


 * Blyttia (journal), a Norwegian botanical journal
 * Blyttia Arn. (1838) a legitimate genus of flowering plants in the family Apocynaceae, considered a synonym of Vincetoxicum
 * Blyttia Fr. (1839) an illegitimate genus of flowering plants in the family Poaceae, considered a synonym of Cinna
 * Blyttia Endl. (1840) an illegitimate genus of liverworts, superseded by the genus Moerckia Gottsche 1860