According to Metro, the 'Drop Dead Gorgeous' images have been inspired by various movies, including Reservoir Dogs, The Godfather and some James Bond films.
CofaniFunebri has released raunchy calendars for several years. The September page in the 2011 calendar features a topless model straddling one of the firm's coffins.
Company spokesman Bartek Lindner said: "It has a sort of Hollywood feel with a darker edge."
However, Father Tadeusz Rybnik in Warsaw reportedly complained: "This is simply tasteless and shocking. Death is not sexy and the connotations presented in this calendar are disturbing to say the least."
CofaniFunebri's official website also boasts several images of women in their underwear to promote the firm's three main lines of coffins and other products.