Frank Aaen (born 25 July 1951) is a Danish economist and Member of Parliament (the Folketing) for Enhedslisten.

On 15 March 2006, he suffered a thrombosis[1] but was back in the Folketing by April.

Frank Aaen is an educated economist and holds a master's degree in economics from Aalborg University which he received in 1985.

[3] In January 2019, he was accused by Kristian Jensen of spreading false information regarding the sale of energy company Radius.

[5] The Danish Ministry of Finance has canceled the sale citing a lack of political support.