The vortex of violence around the Marikana mine during a wildcat strike in August 2012 culminated in the police shooting 34 striking miners dead.
The total death toll from the violence was 44, with 10 people killed in clashes leading up to the shooting, including two police officers.
Ramaphosa was a director and shareholder at Lonmin at the time of the shootings and was involved in email exchanges with authorities in the days leading up to the shooting. He has denied accusations he pressed for a police crackdown.
“A summons has indeed been served on lawyers of Deputy President Ramaphosa arising from the Marikana tragedy. Ramaphosa has instructed his lawyers to defend the action,” a statement from the Presidency said.
Families of 37 of the South African miners killed filed a civil suit against the minister of police in August.
It was not clear how many family members were suing Ramaphosa. The families’ lawyers were not immediately available for comment.
The families of victims are represented by the Legal Resources Centre and Wits Law Clinic, which is part of the University of the Witwatersrand in Johannesburg.
A long-awaited investigation into the killings, released in June by President Jacob Zuma, found Ramaphosa was not responsible for the shootings. The report largely blamed Lonmin, the police and unions for the “tragedy”.