Jordan, who earned one international cap and helped Rangers claim inaugural PSL honours in 1996/7, was 37.
"On behalf of Fifa and the worldwide football community, I wish to extend our deepest sympathies to Keryn’s families, friends and loved ones,"said Blatter.
"We would hope that in some way, these words of support may help bring a little bit of peace and solace in this time of sadness."
Oceania Football Confederation spokesman Gordon Watson said Jordan, who excelled for New Zealand outfit Auckland City after leaving the Mighy Maulers, was a great ambassador for South Africa.
"Keryn’s loss is keenly felt in our part of the world," said Watson.
"He was a fine footballer, a fine person and an exemplary ambassador of South Africa.
"A small corner of our hearts will forever be South Africa at the OFC and Auckland City FC.
"To Danny (Safa president Jordaan) and the football community of South Africa, we are suffering with you and the family of Keryn Jordan."