The coat of arms that serves as the official symbol of the Masovian Voivodeship, Poland, consists of a red escutcheon, that features a white (silver) eagle, with raised wings, and its head turned left.

The coat of arms of the Masovian Voivodeship has a red Iberian style escutcheon with square top and rounded base.

[3] The design of the coat of arms had originated from the seal used by Siemowit III, Duke of Masovia, in 14th century, that depicted an eagle with raised wings, and its head facing left.

[5] In such division, the areas under the control of duke Siemowit IV, the duchies of Płock, and Rawa, continued using the design of the seal of their father, as a coat of arms with white (silver) eagle on a red background.

The bottom left field featured a background divided vertically onto two identical stripes, white and red.

It hold a white (silver) banner with the red cross on it, and stood next to a yellow (golden) chalice, to which, it was bleeding blood from its chest.

The bottom left field featured a background divided vertically onto two identical stripes, white and red.

[12] The new design of the coat of arms had been approved on 25 February 1869, by Alexander II of Russia, the emperor of the Russian Empire.

Around the shield, there are yellow (golden) leaves of the oak tree, interspersed with the blue ribbon of the Order of St. Andrew.

Eventually, the plans for the establishment of the coat of arms had been stopped by the Invasion of Poland by Nazi Germany, on 1 September 1939, that begun the World War II, and were not picked up back after the end of the conflict.

The coat of arms depicted a white (silver) eagle with raised wings, and its head turned left.

The design of the eagle had been changed, to one based on the coat of arms of the Masovian Voivodeship of the Crown of the Kingdom of Poland, used from 1526 to 1795.