Nike also said it is pulling all Vick-related items from its retail stores.
The decision comes one day after the Atlanta Falcons quarterback pleaded not guilty to charges that he ran an interstate dog-fighting ring.
"Nike has suspended Michael Vick's contract without pay, and will not sell any more Michael Vick product at Nike-owned retail at this time," the sports-apparel giant said in its statement. "As we've said before, Nike is concerned by the serious and highly disturbing allegations made against Michael Vick and we consider any cruelty to animals inhumane and abhorrent. However, we do believe that Michael Vick should be afforded the same due process as any citizen in the United States, therefore, we have not terminated our relationship."
Separately, the NFL today pulled Vick-related items from its NFLShop.com online apparel store, and Reebok, which doesn't count Mr. Vick as an endorser but is the leading manufacturer of NFL jerseys, also said it would suspend sales of Vick-related items.
"While we respect the legal process we find the allegations against Mr. Vick too disturbing to ignore, therefore, we have decided to immediately suspend selling Vick NFL product, both at retail and online through the Reebok website," Reebok said in a statement.