"My Angel. Rest in peace," Mark wrote in the caption of a photo of the family matriarch on Instagram.
"My mom Alma's joy for life, love and people -- combined with a pride in her humble beginnings and refusal to forget where she came from -- undoubtedly shaped me into the man that I am," Donnie posted on Instagram.
Donnie Wahlberg's wife, Jenny McCarthy, called Alma Wahlberg "the worlds greatest mother-in-law" on Twitter.
The posts did not specify how she died.
Alma appeared on the Wahlberg family's reality show on A&E called "Wahlburgers," which provided a behind-the-scenes look at running a family restaurant.
"Alma is the matriarch of the Wahlberg family. As the mother of nine children, she has seen it all. Alma worked as a bank clerk and nurse's aide to make ends meet while raising her children in tight quarters on the Dorchester streets where she grew up," the show's website said.