Mark Borsch is a German international referee.

He mainly serves as an assistant referee in domestic league in Germany including Bundesliga. He has experience refereeing Champions League and Europa League, also as an assistant referee.

He has been listed as a FIFA referee since 2008. He was an assistant referee in World Cup 2014 and Euro 2016 qualifiers. On 1 March 2016, he was named as an assistant referee for UEFA Euro 2016.