British number one and world number four Murray missed GB’s last tie, a thrilling Euro/Africa Zone Group I victory over Slovakia that set up the clash with Belgium, with the winner advancing to the World Group play-offs in September.
James Ward and Dan Evans will contest the singles rubbers in Glasgow, with doubles pairing Colin Fleming and Ross Hutchins also named.
Murray is currently competing at the Miami Masters and hinted at the last tournament in Indian Wells that he would not feature in Glasgow if things went to plan in Florida.
"It depends on how Miami goes," he said at the time. "You always plan for the best-case scenario and that's finishing on Sunday evening with a win [in the final] and then you go from there."
The Davis Cup tie begins a week on Friday, only five days after the conclusion of the Miami Masters. The clay-court season then gets under way, with Murray scheduled to start with the Monte Carlo Masters which begins on April 15.
"After the last win against Slovakia the team were on a real high but we are now fully focused on preparing for the tie against Belgium, who we know will provide an altogether new challenge," Britain captain Leon Smith said.
"It will be a real step up against an opposition higher ranked than us, but if the team can put on some fine performances as they did against Slovakia, then we have a real chance of qualifying for the World Group play-offs.
"We will give it absolutely everything and with the home crowd support behind us, we are very much looking forward to a hugely exciting tie."
Murray pulled out of the Slovakia tie in February due to injury concerns following the Australian Open.
The Belgium match is the second round of the Euro/Africa Zone Group I, with the winners advancing to the World Group play-offs which will take place from September 14-16.