Count of Idanha-a-Nova

{{Short description|Portuguese title of nobility}}

Count of Idanha-a-Nova was a Portuguese title of nobility created on two occasions.

The first creation, on 1 November 1582, by Philip I of Portugal.

Title holders:

1. Pedro de Alcáçova Carneiro (1515 - 1593), 1st Count of Idanha-a-Nova, secretary of kings John III and Sebastian I of Portugal and Vedor da Fazenda of kings Sebastian I and Philip I of Portugal.{{Cite book|last=Braamcamp Freire|first=Anselmo|url=http://archive.org/details/brasesdasalade01braauoft|title=Brasões da Sala de Sintra - Livro Primeiro|date=1921|publisher=Coimbra : Imprensa da Universidade|others=Robarts - University of Toronto|location=Coimbra|pages=183 - 184}}

The second creation, on 17 June 1892, by Carlos I of Portugal.{{Cite web|title=Condes de Idanha-a-Nova (2.ª criação)|url=https://geneall.net/pt/titulo/6237/condes-de-idanha-a-nova/|url-status=live|website=Geneall|archive-url=https://web.archive.org/web/20170916172943/http://geneall.net/pt/titulo/6237/condes-de-idanha-a-nova/ |archive-date=2017-09-16 }}

Title holders:

1. Jerónimo Trigueiros de Aragão Martel da Costa, 1st Count of Idanha-a-Nova
2. Joaquim Trigueiros Osório de Aragão, 2nd Count of Idanha-a-Nova
3. Joaquim Maria Trigueiros Coelho Frazão Osório de Aragão Martel, 3rd Count of Idanha-a-Nova;
4. Maria de la Salette Trigueiros Coelho Frazão Osório de Aragão Martel, 4th Count of Idanha-a-Nova