A firefighting plane linked to Turkey's General Directorate of Forestry crashed in the southern province of Kahramanmaras on Saturday, killing all eight people on board.
In a separate statement, the Russian Defense Ministry confirmed the Russian Be-200 amphibious plane crashed while landing near Turkey's Adana province following a firefighting mission.
All five Russian and three Turkish servicemen on board the plane were killed in the crash, the statement said.
A special commission of the Russian Defense Ministry, as well as the employees of the Russian Embassy in Turkey, are heading to the place for the investigation, it added.
The plane was sent to Turkey on July 8 to help Turkey fight the wildfires.
Be-200 is designed specifically for fighting fires, including in remote areas, it can carry 12 tons of water.
Turkish Foreign Minister Mevlut Cavusoglu said he is "deeply saddened" by the loss of the Turkish and Russian crew in the tragic plane crash.
"Their heroic sacrifices will not be forgotten!," Cavusoglu added.
Russian President Vladimir Putin also offered his condolences to Turkey over the loss of lives in a telegram addressing Turkish President Recep Tayyip Erdogan.