Pyrus may refer to: The genus of the pear tree (under some taxonomy, sometimes including species of genera Malus and Sorbus) Main//Pyrus DMS, a Document Management System The PEAR (PHP Extension and Application Repository) installer, requiring at least PHP 5.3, to replace the previous PEAR installer Pyrus (software), a cloud-based workflow automation system Pyrus (series), a Nordic Christmas calendar in Denmark