Writing & StyleStyle guide

Languages, Nationalities, and Religions: Capitalization

Languages, nationalities, peoples, religions, and adherent names are proper-name categories in the reviewed guidance. Combining them in one guide makes the shared rule clear while preserving a boundary: not every adjective about culture, belief, geography, or identity is automatically a formal proper name.

Quick answer

Capitalize formal names of languages, nationalities, peoples, religions, and adherent groups: for example, Spanish, Brazilian, Sámi, Islam, Muslim, Buddhism, and Christian. Keep ordinary descriptive words lowercase unless they are themselves part of a proper name.

Key details

Core Issuecapitalization of language, nationality, people, religion, and adherent names
Rule Familyproper-name capitalization for identity and language names
Scopegeneral, academic, and institutional editorial writing

Important caveats

Generic Word Boundary

Do not capitalize an ordinary descriptive noun or adjective merely because it appears near a nationality, language, or religion. Capitalization belongs to the established proper name itself.

Further guidance

Languages And Nationalities

Use initial capitals for language and nationality names such as “Spanish,” “Portuguese,” “Brazilian,” and “French.” Official language names do not always match the country name, so verify the correct name rather than inventing a form.

Peoples And Groups

Recognized people and regional group names in the reviewed government style take initial capitals, for example “Sámi,” “Asian,” and “Basque.” Use the community’s current preferred name when that is relevant to the document.

Religions And Adherents

Formal religion and adherent names are capitalized: examples in reviewed university guidance include “Catholicism,” “Buddhists,” “Islam,” “Muslims,” and “Christianity.”

Worked Examples

“She speaks Spanish and Portuguese.” “The report discusses Buddhist and Christian communities.” “The regional survey includes Basque speakers.”

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. Nationalities, peoples and places outside Australia (opens in a new tab)Australian Government Style Manual · Current government style uses initial capitals for names of nationalities, peoples, and languages. Supports the proper-name principle while remaining scoped to an editorial system.
  2. Proper Nouns (opens in a new tab)George Mason University Writing Center · Explains that proper nouns are capitalized and gives religions and adherents such as Catholicism, Buddhists, Islam, Muslims, and Christianity as examples. Later copy must distinguish formal names from generic descriptive words.

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Historical Periods, Events, and Holidays: Capitalization

Historical periods, named events, and holidays share the same core decision: is the phrase functioning as an established proper name or merely a generic description? Reviewed government and university guidance supports capitals for specific names while allowing lowercase for generic periods, eras, battles, revolutions, or event descriptions.

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School Subjects, Academic Majors, and Course Names: Capitalization

Academic capitalization is easiest when subjects, majors, and courses are handled together. General fields and majors are usually common-noun descriptions, while language/nationality terms retain proper-name capitals and formal course titles function as names. Institutional house style can refine the details.

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