Registrar - Financial definition Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Tags: activities and occupations issuance status or titles Concise definition of the term registrar Party or agent responsible for securities register maintenance and services. Browse the financial glossary in alpabetical order # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z