The 58-year-old is among seven people believed killed when a light aircraft crashed into a lake near the town of Smyrna on Saturday.
His dietician wife, Gwen Shamblin Lara, who founded a weight-loss church, is also among the victims.
Rescue workers say they found wreckage and human remains at the crash site.
Mr Lara played the lead role in the 1989 TV movie Tarzan in Manhattan before reprising the role in the follow-up TV series Tarzan: The Epic Adventures.
He gave up acting in 2002 to pursue a career in country music.
