Cosmas I of Constantinople

Cosmas I of Constantinople
Ecumenical Patriarch of Constantinople
ChurchChurch of Constantinople
In office2 August 1075 – 8 May 1081
PredecessorJohn VIII of Constantinople
SuccessorEustratius Garidas
Personal details
Born?
Diedafter 1081

Cosmas I of Constantinople (Greek: Κοσμᾶς; died after 1081) was Patriarch of Constantinople from 2 August 1075 to 8 May 1081.