A pen name, also known as a pseudonym, is a fictitious name used by an author instead of their real name. Writers often choose pen names for various reasons, such as maintaining privacy, creating a distinct identity, or separating different genres of their work. Famous authors like Mark Twain and George Orwell used pen names to enhance their literary personas. Using a pen name can also help authors avoid bias or preconceived notions based on their real names. For instance, female authors may adopt male pen names to gain wider acceptance in a male-dominated literary world. Overall, pen names serve as a tool for creative expression and personal branding.