A removable personalized seat marker assembly that is temporarily installed on the user's seat at an event to personalize the user's seat. The user may easily remove the seat marker assembly and keep it as memorabilia of the event. The removable seat marker assembly comprises a personalized marker that enhances the experience of attending an event by allowing the user to customize their seat at the event by choosing from a variety of templates, personal user information, or event information, such as user's name, and/or the event name, date, and/or place. The seat marker assembly comprises a body having a front panel and a rear panel forming at least one enclosed compartment therein. The body comprises one or more attachment portions for installing the seat marker assembly to a seat. The front panel of the body comprises a clear window for displaying a personalized marker printed with information about the user and the event. The personalized marker may further comprise a machine-readable medium, wherein upon scanning the machine-readable medium at the event with a communication device of the user, the user may access, via a mobile phone application or website, information associated with the event, the user, the personalized marker, or any combination thereof.