Carmen Aguado, Duchesse de Montmorency (née Carmen-Ida-Marie; 28 June 1847 – 26 November 1880) was the only daughter of Alexandre Aguado Moreno and lady-in-waiting Claire Emilie MacDonnel.

By marriage to Adalbert de Talleyrand Périgord, Duc de Montmorency, she was the Duchess of Montmorency.

Carmen was the subject of a portrait by Franz Xaver Winterhalter.

[2] Claire was a lady-in-waiting to Eugénie de Montijo, and Alexandre was a patient at a mental asylum.

[4] In 1860, Carmen was the model for prominent artist Franz Xaver Winterhalter.