Ziakas (, before 1927: äïÃÂÃÂñ â Tista, between 1940 and 2017: ÃÂìúñàâ Zakas) is a village and a community of the Grevena municipality. Before the 2011 local government reform it was a part of the municipality of Theodoros Ziakas, of which it was a municipal district. The 2021 census recorded 136 residents in the community. The community of Ziakas covers an area of 29.711 km<sup>2</sup>.
The community of Ziakas consists of two separate settlements: