Malcolm Justin Marx (born 13 July 1994) is a South African professional rugby union player for the South Africa national team and the Kubota Spears in the Japanese Top League. His regular position is hooker, but he did play as a flanker at youth level for the . Youth and Varsity rugby Marx represented the at several youth tournaments. He played for them at the 2007 Under-13 Craven Week competition and the 2010 Under-16 Grant Khomo Week competition. During his schooling, Marx attended King Edward VII School in Johannesburg. Marx was included in a South Africa Academy side in 2011 and, following the 2012 Under-18 Craven Week competition, he was named in the South Africa Schools side and played against France and England in August 2012. In 2013, Marx played for in the 2013 Varsity Cup competition, making eight appearances and scoring four tries. Marx was also a regular for the side during the 2013 Under-19 Provincial Championship competition. He made thirteen appearances in total, scoring four tries – one of them in the final against the . He was also named as the Golden Lions U19 Forward of the Year for his displays. Marx was included in the South Africa Under-20 side for the 2014 IRB Junior World Championship. Golden Lions / Lions Marx made his senior debut for the in the 2014 Vodacom Cup by starting in their 18–16 opening day victory over the in Potchefstroom. Marx was also included in the Super Rugby squad for the 2014 Super Rugby season. After a stellar 2017 for the Lions, Marx picked up a number of awards for the Lions including Super Rugby Player of the Year, Supporters Player of the Year, Players Player of the Year and Most Valued Player of the Year. Marx continued this form into the 2018 Super Rugby season, finishing the competition as the Lions' top try-scorer of the year and he is now the join top try scorer (27) in Lions history, a record he shares with current team mates Courtnall Skosan and Lionel Mapoe. South Africa 'A' In 2016, Marx was included in a South Africa 'A' squad that played a two-match series against a touring England Saxons team. He came on as a replacement in their first match in Bloemfontein, but ended on the losing side as the visitors ran out 32–24 winners. He then started the second match of the series,