Dierckx or Dierkx is a Dutchpatronymic surname based on a short form of Diederik. It is most common in the Belgian province of Antwerp. People with this surname include:
Leo Dierckx (born 1943), Belgian volleyball player
Kaatje Dierkx (1866âÂÂ1900), Dutch canonized nun and missionary in China known as Marie-Adolphine
Octave Dierckx (1882âÂÂ1955), Belgian liberal and politician