Bryan McAllister’s personal reference notebook
August 1, 2026Short & citedBlog
Civic Viewpoint.
A quiet encyclopedia with a personal desk
Kept by Bryan McAllister — short guides, clear facts, and the Canadian angle when it matters.
Civic Brief • National Symbols

Flag of Portugal

The flag of Portugal is a vertical bicolour of green at the hoist and red at the fly, with the national coat of arms centered over an armillary sphere.

Updated August 1, 20261 min readCited sources

The flag of Portugal is a vertical green-and-red bicolour with the national coat of arms centered over an armillary sphere. It was officially adopted in 1911 after the republican revolution replaced the monarchy.

What it is

The flag has a 2:3 proportion, with green on the hoist side and red on the fly side. The coat of arms includes the Portuguese shield and a red border with castles, set over an armillary sphere—a navigational instrument tied to Portugal’s Age of Discoveries.

Why it matters

The design replaced the blue-and-white monarchical flag after the 1910 revolution, symbolizing republican identity and Portugal’s maritime heritage. For Canadian readers, the flag is relevant through the Portuguese diaspora in Canada and the country’s historical links to Atlantic exploration and migration.

Key details

Green represents hope and the republican movement; red stands for courage and sacrifice. The armillary sphere and shield reference Portugal’s heraldic and exploration traditions. The flag was formally approved by decree on 30 June 1911.

In short

  • Adopted in 1911 after the republican revolution.
  • Green and red symbolize hope, courage, and republican change.
  • Armillary sphere reflects Portugal’s maritime history.
  • Replaced the former blue-and-white monarchical flag.
Canadian angle

Portugal’s flag is of interest to Canadian readers through Canada’s Portuguese diaspora and Portugal’s broader historical connections to Atlantic exploration and migration.

Quick questions

What does the Portugal flag look like?
It is a vertical green-and-red flag, with green on the hoist side and red on the fly side. The national coat of arms appears in the centre, over an armillary sphere.
What do the colors of the Portugal flag mean?
Green is commonly interpreted as hope and the republican movement, while red represents courage, sacrifice, and revolutionary change.
When was the Portugal flag adopted?
The current flag was officially adopted on 30 June 1911.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Flag_of_Portugal
    Supports: Design, adoption date, and republic-era history of the flag.
  2. Encyclopaedia Britannica — https://www.britannica.com/topic/flag-of-Portugal
    Supports: Armillary sphere symbolism and the 1911 restoration/adoption context.
  3. Flags.fyi — https://flags.fyi/portugal/
    Supports: Colour meanings, coat of arms elements, and armillary sphere symbolism.