Elizabeth of Courtenay French: Elisabeth de Courtenay) (c. 1199–1269 or later) was an Empress consort of Bulgaria, the daughter of Peter II of Courtenay and Yolanda of Flanders.

Elisabeth married tsar Boril of Bulgaria (died 1218),^{[citation needed]} Walter of Bar-sur-Seine (died 1219)^[1] and then Eudes I Lord of Montaigu.^[2] Elizabeth and Eudes had:

• Alexandre of Montagu, (1221–1249)
• Guillaume I, Lord of Montaigu, (1222–1300)
• Phillipe of Montagu, Lord of Chagny (born 1227) married Flore d'Antigny. Had a daughter Jeanne of Montagu.
• Gaucher of Montagu, Lord of Jambles, (born 1230)
• Eudes of Montagu, (born 1231)
• Unnamed daughter, (died young)
• Unnamed daughter, (died young)
• Marguerite, Lady of Villeneuve, (born 1232) ^{[citation needed]}