Monster Jam is a live motorsport event tour and television show created by Live Nation (formerly Clear Channel Entertainment). The series is sanctioned under the umbrella of the United States Hot Rod Association (USHRA) and takes place primarily in the United States. Although individual event formats can vary greatly based on the "intermission" entertainment, the main attraction is always the racing and freestyle competitions by monster trucks.

Although Monster Jam events are held year round, the traditional competitive season (when televised shows are taped) runs from January to March, with a few events to start off the season in November. During the winter run, it is not unusual for up to 10 events to be run in different areas on the same weekend, with one or two major stadium events with 10-16 trucks, and a group of smaller arena events with 4-8 trucks. The season culminates in the Monster Jam World Finals in Las Vegas in late March. There is also a Monster Jam Europe tour in the summer and autumn, as well as a domestic series of summer events known as Monster Jam Summer Heat.

According to the USHRA in 2004 season more than 2.5 million people attended these events.

Because of the large number of events and massive popularity of the series, the list of trucks competing in the series is the longest of any promoter. The most popular trucks, which are usually featured on the television show, come from three primary groups: Trucks (or names) which are owned by Live Nation (such as Grave Digger and Batman), independents or "privateers" (such as Gun Slinger and Avenger), and "corporate privateers" which are independently owned but sponsored by major companies (such as Bounty Hunter, sponsored by CSK Auto, and T-Maxx, sponsored by AMSoil). Live Nation's ownership of several of the most popular trucks often leads to allegations of favoritism, although they maintain that events are run fairly.