Where to send a deceased person's passport?

A family member passed away recently - what should I do with their passport?

You can return their passport for cancellation, along with a copy of their death certificate to:

Customer Care
Passport Office
Freepost PO Box 9718
Balbriggan
County Dublin

Or

Passport Officer
Embassy of Ireland
SHIS QL 12 conjunto 05 casa 09
Lago Sul
Brasília - DF
CEP 71630-255
Brazil