Josh van der Flier (/væn dər ˈflɪər/) (born 25 April 1993) is an Irish rugby union player for Leinster and Ireland. His preferred position is flanker, but plays at other positions if needed. Van der Flier is of Dutch descent through his paternal grandparents, who moved to Ireland in the 1950s to open a radiator factory. He is commonly referred to amongst Leinster Rugby circles as ‘The Dutch Disciple’.