Alexander Komnenos Asen
{{Short description|Medieval Bulgarian nobleman of the Sratsimir family}}
{{Infobox royalty
| consort = no
| name = Alexander Komnenos Asen
| title = Sebastos of Vlorë
Lord of Berat, Vlorë and Kaninë
| image = Stratemirovic Coat of Arms.jpg
| caption = Coat of Arms of the Sratsimir family
| spouse =
| succession = Lord of Berat, Vlorë and Kaninë
| reign = 1363–1372
| predecessor = John Komnenos Asen
| successor = Balsha II
| full name =
| house = Sratsimir
| father = John Komnenos Asen
| mother =
| birth_date = 1340
| birth_place =
| death_date = 26 September 1371
| death_place = Battle of Maritsa
| burial_place =
| religion =
| issue =
| issue-link =
| issue-pipe =
}}
Alexander Komnenos Asen ({{langx|el|Αλέξανδρος Κομνηνός Ασέν}}; {{langx|bg|Александър Комнин Асен}}) was the son of Despot John Komnenos Asen{{cite book| title=The Serbs and Byzantium During the Reign of Tsar Stephen Dušan (1331–1355) and His Successors | first = George Christos | last=Soulis | publisher=Dumbarton Oaks | year=1984 | isbn=0-88402-137-8}} and nephew of Emperor Ivan Alexander of Bulgaria and Empress Helena of Serbia.[http://genealogy.euweb.cz/balkan/balkan11.html The House of Shishman: Komnina Asen Komnenos], genealogy.euweb.cz
Alexander Komnenos was Sebastos of Valona and Lord of Kanine and Valona which he succeeded from his father John (alternatively Ivan) Komnenos, however he lost both cities to Andrea II Muzaka in battle shortly after inheriting them. He did not succeed the nearby city of Belgrad which was occupied by the Principality of Muzaka.{{Cite web|url=https://klikoje.al/kush-ishte-andrea-ii-muzaka/|title=Kush ishte Andrea II Muzaka|date=5 February 2021|website=klikoje.al}} Alexander's rule was characterized by extensive trade with both the Republic of Venice and the Republic of Ragusa.
It is speculated that he died on 26 September 1371 at the Battle of MaritsaВеселин Асенов, „Балканската игра на тронове“, сп. „Българска история“, април 2018 г., стр. 35, ISSN 2367-864X because in 1372 his lands were in possession of Balsha II.{{cite book |last=Божилов |first=Иван |title=Фамилията на Асеневци (1186 – 1460) |publisher=БАН |year=1994 |isbn=954-430-264-6 |author-link=Иван Божилов |origyear=1985}}