FIFA sponsors adidas and Kia Motors are not following four of the organisation's other corporate backers in demanding Sepp Blatter resign immediately.
The president of world soccer's governing body rebuffed demands on Friday from Budweiser, Coca-Cola, McDonald's and Visa to step down now - instead of holding on to power until February's emergency election.
Adidas would not discuss Blatter's status on Saturday, only telling The Associated Press: "The initiated reform process must continue quickly and transparently."
Adidas has provided the match ball for every World Cup since 1970.
Kia has sponsored FIFA with corporate affiliate Hyundai since 1999. The South Korean firm told the AP it does not "have any comment at the present time regarding Sepp Blatter or our current FIFA sponsorship status".
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Kia did not respond when asked if that meant its FIFA deal, which runs through 2022, is no longer certain.
