Welsh Premier League club
"I informed the club of my intentions and I hope now someone can take over the reins," said Colley.
The 58-year old added: "It’s vital that people come forward to help out on match days and support a club playing in their area, because without the volunteers, it becomes very difficult.
"The highlight of the club and my time there has to be playing Celtic at
"I will be helping out in an advisory position until certain titles have been filled."
"I’m moving out of the Cwmbran area soon and to be honest, that will give me more time to spend with my family," said Colley, the chairman for the past eight years.
"Business commitments are demanding more and more of my attention and although it's a wrench to retire from the club and the game I love, my decision is final.
"I did tell club officers and the management team that I intended to retire after the final game of the season back in April.
"They asked me then to think things over until now. I did and have come the same decision."
"We've teams playing from under-12 to under-19s and, of course, we have an extremely successful academy while our youth team won last season’s McWhirter National League.
"The club will also be joining the newly-formed Welsh Premier under-21 league – and the new chairman will see a well-oiled conveyor belt designed to produce players for the first team."
Last week we reported that Cwmbran have only three people running the club, which is taking it’s toll on those involved with a lack of any real organisation at the club, and unless fans or locals come forward to help the club out, they may not be able to run the club.