Last name Matwiej (Matwiej 
) , in all the world, is a rare cognomen. The cognomen Matwiej is habitual in Poland, where it is a rare surname, Norway, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Poland, the United Kingdom, and the United States. More prevalently, Matwiej is the forename as well as the last name.