The Coat of arms of Calderdale Metropolitan Borough Council was granted to the new council of Calderdale just a few months after the district was created as part of the new metropolitan county of West Yorkshire in 1974.
The formal description, or blazon, of the arms is:
For the arms: Vert a Paschal Lamb proper supporting over the shoulder a Cross Staff Or flying therefrom a forked Pennon of St. George between in chief a Bar wavy Argent charged with a Barruret wavy Azure and in base a Rose Argent barbed and seeded proper; and for the crest: On a Wreath Argent and Vert out of a Mural Crown a Rose Tree of nine branches proper each terminating in a Rose Argent barbed and seeded proper; and for the supporters: On either side a Lion Or gorged with a collar wavy Azure and holding aloft in the interior forepaw a Crescent Sable; Motto: INDUSTRIA ARTE PRUDENTIA.
"Civic Heraldry of England and Wales - Yorkshire".