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Campi is a term with multiple meanings depending on language and context. In Italian, campi is the plural of campo and means fields, open areas, or courts. It is used broadly to denote physical fields in geography or agriculture, and it also appears in place names and geographical labels, such as Campi Bisenzio, where the word signals a field-like area.

In Latin, campi is a form of campus. It can be the nominative plural meaning fields, or the genitive singular meaning of the field, depending on grammatical case. Because of its Latin origin, the form appears mainly in scholarly, historical, or liturgical contexts and is not the standard English plural for campuses.

In English, the usual plural of campus is campuses. Campi is not common in regular writing and is typically encountered only in discussions of Latin grammar, in historical or academic texts, or when rendering Latin phrases or Italian place names into English, where the form may be preserved for fidelity or stylistic reasons.

Etymology and related terms: Campi derives from Latin campus, meaning field or plain; related forms appear in Italian as campo (singular) and campi (plural). Related concepts include campus, toponymy, and linguistic studies of plural forms across languages.