Wade's donation was a one-game salary, about $175,000, while Mourning, Lebron James, Kevin Durant and Chris Paul each pledged $100,000 to the fund. The "Athletes Relief Fund for Haiti" began soliciting from pro athletes Friday.
"I expected nothing less from my friends and colleagues in the sports community," Wade said in a release. "Our commitment to this cause knows no bounds, and we will continue to accept any and all donations throughout the days ahead."
Mourning spent about 36 hours in Haiti last week, traveling with Miami-based Project Medishare, which has worked to bring health care to the nation for about 15 years. The retired All-Star worked at a makeshift hospital and assisted rescue workers and first responders in the devastated capital of Port-au-Prince get badly needed supplies like water, food and medical equipment.
Mourning plans to return to Haiti on Tuesday. The Heat have also continued efforts to raise money and collect donations for the region.
"The response from our colleagues has been overwhelming," Mourning said. "We accept these donations with complete confidence that Project Medishare will put each dollar to quick and efficient use."
Among the other NBA players announced as donors: Gilbert Arenas, Al Horford, Anthony Parker, Kenyon Martin, J.R. Smith, Carmelo Anthony, Ben Gordon, Mike Dunleavy, Michael Beasley, Udonis Haslem, Quentin Richardson, Devin Harris, Michael Finley, Chris Bosh, Carlos Boozer, Ronnie Brewer and Caron Butler.
NFL players Michael Vick, Terrell Owens, Josh Cribbs, Wes Welker, Randy Moss and Clinton Portis also gave money, fund officials said. Welker, Cribbs and suspended NFL player Donte Stallworth all had Twitter play a role in their donation amounts, with Stallworth saying on his feed that he would give $1 for each person who was following him, or about $34,000.
"Follow & let's help the people of Haiti together today!" Stallworth wrote.