Cristian Ruben Spachuck, commonly known as Ruben Spachuck (born 14 February 1981), is an Argentine-born Portuguese rugby union footballer.
He plays as a prop.
One of the four Belenenses players at the 2007 Rugby World Cup finals, he moved to the French team of Blagnac after the tournament.
Spachuck's first game for Portugal came on 5 February 2005, against Georgia, in an 18-14 win.
He played in all the four games of Portugal at the 2007 Rugby World Cup.
He had 47 caps, from 2005 to 2014, with 2 tries scored, 10 points in aggregate.