Their name derives from Lekhitic tribe of Masovians (Mazowszanie) who gave their name to the land of Masovia (Mazowsze). In the Middle ages the inhabitans of northern part of Masovia started be called Mazurzy. Between XIV and XVII centuries settlers from northern Mazovia moved to former teritories of Old Prussians following their conquest by Teutonic Order.

Because of the influx of Masovians into the lake region of East Prussia the area received the descriptive name short Masuria, while the people of East Prussia were East Prussians (Ostpreussen). The East Prussians including the immigrants from Masovia, were Protestants, thus can be differentiated from the Catholic Polish Mazurzy from Masovia.

From their name the lake region of East Prussia was called Mazury.

2. Mazur (Masurian) is also name of one of the five major dialects of Polish language. Its variations are spoken in the countryside of northern Masovia and till about 1950 was commonly spoken in Masuria.

3. Mazur - traditional Polish folk dance from Masovia.

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