Mark was filmed for the ITV2 show at a boxing match in Romford, Essex, which saw his cousin Elliott beat rival Lewis Bloor in a charity fight.
Although he didn't speak in the episode, Mark was shown storming into the ring before lifting Elliott onto his shoulders following his victory.
He was then seen cheering and yelling at his cousin's success.
Mark quit TOWIE in November 2011 following his split with his then-fiancée Lauren Goodger, who he had been in a relationship with for 10 years.
Since then, Mark has gone on to appear in I'm A Celebrity...Get Me Out Of Here! and is currently starring in his own ITV2, Party Wright Around The World.
Mark is now engaged to Coronation Street star Michelle Keegan.
Fans were excited to see Mark back on the show that made him famous last night.
One tweeted: "Omg! @MarkWright_ in a boxing ring on #TOWIE, just doesn't get any better than that! #perfect."
Another posted: "Like a little treat seeing @MarkWright_ on towie tonight!!"
Reality star Mark was actually at the boxing with Michelle, however sadly she didn't make an appearance.
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