Sliba-zkha (the name means 'the cross has conquered' in Syriac) was patriarch of the Church of the East from 714 to 728.
Sliba-zkha's patriarchate
The following account of Sliba-zkha's patriarchate is given by Bar Hebraeus:
The catholicus Hnanishoʿ was succeeded by Sliba-zkha, who was consecrated at Seleucia. He was from Karka d'Piroz, which is today called Karkani, in the Tirhan region. He removed the name of Yohannan Garba ('the Leper') from the diptychs, reconsecrated the bishops consecrated by Garba, and put back the name of Hnanishoʿ, who had been oppressed by calumny, alongside those of the rest of the catholici. He died after fulfilling his office for fourteen years.
According to ʿAbdishoʿ of Nisibis, Sliba-zkha established metropolitan provinces for Herat, Samarqand, India and China.