Pia Filler (née Blaeser - born 7 June 1998) is a German professional pool player from Stolberg, Germany. Pia is married to 2018 WPA World Nine-ball Championship winner Joshua Filler. Filler is a German national champion on 11 occasions. Filler has also been successful on the Euro Tour, reaching the semi-final of the 2018 Portugal Open. She would lose 7–3 to Marharyta Fefilava in the semi-final.