The flags of South America comprise the national emblems flown by sovereign states on the continent as well as banners used by territories, subnational entities and regional bodies. They are a visual shorthand for national identity and appear in diplomacy, public ceremonies and everyday life. Many of these flags can be grouped by shared colors, motifs and historical roots; images and catalogues of these countries and their flags are commonly collected in galleries and reference works.

Common motifs and colors

  • Tri-colours and horizontal bands: Several nations use simple horizontal or vertical bands, sometimes with a central emblem.
  • Yellow, blue and red: A prominent palette across northern South America, often linked to early independence movements and shared histories.
  • Coats of arms, suns and stars: Many flags combine geometric fields with a coat of arms, a sun symbol or a group of stars to represent provinces or ideals.
  • Distinctive national innovations: Unique designs—such as diagonal elements or arrowhead shapes—serve to differentiate countries with similar colors.

Historically, several South American flags trace influences to the era of independence in the early 19th century. Revolutionary leaders and regional unions produced color schemes that later became the basis for multiple national banners. European heraldry and local symbols (indigenous motifs, suns, stars) were often blended to express both continuity and new national identities.

In practice, countries maintain variants for civil, state and military use. Some national flags are simple for everyday display, while state or naval versions add a coat of arms or other device. Regional organizations and summits also use flags to represent transnational cooperation; banners for groups and treaties are displayed alongside national flags at meetings of South American bodies and affiliated international organizations such as regional institutions.

Notable distinctions

  • Paraguay is well known for having different emblems on each side of its flag.
  • Brazil’s green and yellow base and central globe are unique in the region and incorporate a national motto on the official banner.
  • Argentina and Uruguay both feature a ‘‘Sun of May’’ motif with historical associations to independence.

Together, these flags tell a story of shared history and national distinction. Reference galleries and atlases remain useful for comparing designs, learning official proportions and understanding the ceremonial protocols that govern display and use across the continent.