Otto Coninx-Girardet (June 16, 1871, in Friedrich-Wilhelms-Hütte, Rhine Province – December 1, 1956, in Zurich; domiciled ibid) was a German-Swiss mining engineer and publisher.
He studied mining at the Friedrich Schiller University in Jena and at the Bergakademie in Berlin.
Wilhelm Girardet died in 1918; after his death, Otto Coninx-Girardet took over the company Girardet, Walz & Co. AG, which traded as Tages-Anzeiger für Stadt und Kanton Zürich AG from 1933.
He maintaining control over the Tages-Anzeiger and made acquisitions including the Basler Zeitung, 20 Minuten, the Tribune de Genève, 24Heures and Der Bund.
[3] After his death, he was succeeded as managing director by his son Otto Coninx-Wettstein.