Police believe the body of a man recovered from the River Cart, Cathcart, is that of Bryan Carroll.
Mr Carroll, 40, was reported missing on Saturday morning when his family woke to find him gone.
Colleagues at charity Motor Neurone Disease Scotland paid tribute to "well-loved member of our team".
Mr Carroll, who worked as a communications officer, had last been seen at 2.30am on Saturday at his home on Strathyre Street in Shawlands.
Meanwhile, 49-year-old Alastair Carmichael, who had been reported missing from his home in Perrays Crescent, Dumbarton, has been traced safe and well.