Subject tournaments are sets written entirely within one category or subject of the distribution, such as literature, science, or geography. Subject tournaments are a common form of side event at the collegiate or open level and can often be played as singles or doubles events. Most subject tournaments are composed entirely of tossups. Perhaps the most popular and frequent subject tournaments are literature tournaments, such as Chicago Open Lit.
Perhaps the biggest subject tournament, a rare example of subject events being "official" and/or at the high school level, is National History Bowl. Science Bowl is generally not considered a subject tournament since it is not quizbowl.
See also: vanity tournaments.