David Burrows should be sacked from the Parades Commission, Sinn Fein has said.
David Burrows was appointed to the commission
The call followed a party meeting with the commission, after the resignation of Orangeman Don MacKay from the body.
Upper Bann assembly member John O'Dowd said as an Orangeman Mr Burrows had "no place" on the commission, which rules on contentious parades.
Mr MacKay had been criticised for putting two politicians forward as referees on his application form without first asking their permission.
Mr O'Dowd said that since the commission had a "quasi-judicial role" regardless of the details of the appointments process, Mr Burrows should be removed by NI Secretary Peter Hain.
"The Parades Commission's job is to issue determinations on parades, the majority of which are organised by the Loyal Orders," he said.
"Given this fact there should be no place on the Parades Commission for members of the Orange Order."
He said there was still time to address the issue before the height of the marching season.
On Tuesday, Parades Commission chairman Roger Poole told the BBC he believed Mr MacKay had made the "right decision" by resigning.
Don MacKay resigned from the commission
Earlier this week a Methodist minister revealed he did not give permission for Mr Burrows to use his name as a referee for a post on the body.
In a BBC radio interview on Wednesday, Reverend Jim Rea said the Northern Ireland Office should have checked the references.
"I think that if the NIO had done their homework on this this situation could have been completely and utterly averted," he said.
"I think it says something about a flawed process that has left everybody exposed and embarrassed."
He said that he had no "personal ill-feelings" towards Mr Burrows.
He said that he had provided a reference to another Orangeman for a position on the commission, with whom he had worked on the "mediation process in Portadown".
He added that he had agreed to provide a reference for Mr Burrows relating to employment two years ago.
The Protestant marching season is one of the fixed elements of Northern Ireland life, and in recent years some parades have led to disputes and street violence.
The government-appointed Parades Commission was set up in 1997 to make decisions on whether controversial parades should be restricted.