The 13th High Criminal Court in capital Ankara sentenced the wife of a former general to 18 years in jail on Monday, according to a judicial source.
Nazire Terzi had been convicted on the charge of aiding those who violated the country's constitution.
Her husband Brig. Gen. Semih Terzi was one of the coup bid leaders and was shot dead on July 15, 2016, by Sgt. Omer Halisdemir.
Halisdemir later became a symbol of the Turkish nation's resistance to the defeated coup in 2016.
Separately, a criminal high court in southern Adana province sentenced former police chief Dogan Oguz to six years and three months in prison after convicting him on the charge of being a member of an armed terrorist organization.
FETO and its U.S.-based leader Fetullah Gulen orchestrated the defeated coup of July 15, 2016, which left 250 people martyred and nearly 2,200 injured.
FETO and its leader, Gulen are also suspected of being behind a long-running campaign to overthrow the Turkish state through the infiltration of Turkish institutions, particularly the military, police and judiciary.
