Ferdinand Bonaventura, Count of Harrach and Rohrau (German: Ferdinand Bonaventura Graf von Harrach zu Rohrau; 14 July 1637 – 15 June 1706) was an Austrian statesman, diplomat and courtier from the noble family of Harrach, Knight of the Order of the Golden Fleece and owner of estates in Austria and Bohemia. To distinguish him from his grandson of the same name, he is referred to in contemporary sources as Ferdinand Bonaventura I.