The flag of Magallanes y la Antártica Chilena Region is one of the regional symbols of the Chilean Magallanes y la Antártica Chilena Region. The flag was adopted in 1997 by the regional government, along with the Regional Coat of Arms.^[1]

The regional flag is a blue field, in the bottom of which stands a golden strip highlighting six peaks, which are covered on top by a white border. On top of these, and in front of blue background, is placed the Southern Cross on a slant and white stars.

According to the official symbolism, the blue color represents the night sky, while the golden peaks symbolize the steppe region, while white indicates the snow that often falls in winter. The Southern Cross symbolizes the position of the area.

The flag must be hoisted in all private and public buildings on September 21 (in remembrance of the discovery of the Magellan Strait by Ferdinand Magellan), September 29 (in remembrance of the annexation of Magallanes to Chile) and October 21 (Regional Day).