Mid Galloway member Graham Nicol passed away on Friday.
He was the depute leader of the council’s Conservative group and was first elected in 2007.
Paying tribute, the leader of Dumfries and Galloway Council, Dr Elaine Murray, said:“Graham was well liked and highly regarded by councillors of all parties. He was always prepared to work with others for the benefit of his constituents and the residents of Dumfries and Galloway and served both his ward and the region with distinction.
“He will be very sadly missed by us all.”
Annandale North Councillor, and fellow Tory, Gail MacGregor, said she was deeply saddened and added: “For the past 12 and a half years Graham has been a wonderful mentor, support, confidante and friend. The truest of gentleman, who genuinely cared.”
And Galloway and West Dumfries MSP Finlay Carson said: “I am greatly saddened by the news of the untimely death of a great friend and colleague in Councillor Graham Nicol.
“He gave so much time and efforts to others and as a councillor worked tirelessly for his ward in Wigtownshire, even after winning his battle with cancer only a few years ago.
“He will be sadly missed.
“Away from politics he was also a committed family man and my thoughts are with Ruth and his family at this sad time.”