Claudio Aranzadi (born 9 October 1946) is a Spanish engineer, businessman and politician.

[2] In 1984, he was made deputy chairman of Instituto Nacional de Industria (INI), a vast state holding company of Spain.

[2] He became the chairman of INI on 1 August 1986, replacing Luis Carlos Croissier Batista in the post.

[4] Aranzadi supported privatization during his term at the INI, arguing that it was a powerful means of organizing asset portfolios and investment strategies.

[6] Aranzadi was a member of the Spanish Socialist Workers' Party, being one of its right-wing leaders.