In 1940, he joined the Free French Forces in the United Kingdom.

First elected under the banner of the left wing Gaullist Democratic Union of Labour, he later belonged to various right-wing parties: Union pour la nouvelle République (1962–1968), the Union of Democrats for the Republic (1968–1978) and the Rally for the Republic (1978–1997).

In 2000, Guéna was named president of the Constitutional Council of France.

In 2004 he left to become president of the Arab World Institute until 2007.

This article about a Rally for the Republic politician is a stub.