Voivodeni (also Sânioana or Sântioana; Hungarian: Vajdaszentivány, Szentivány; German: Johannisdorf, Johannesdorf) is a commune in Mureș County, Transylvania, Romania.

In the commune town of Toldal, there is definite finds of Roman settlers, who focused on agricultural production.

After the Hungarian–Romanian War of 1918–1919 and the Treaty of Trianon of 1920, the commune became part of the Kingdom of Romania, and was attached to Mureș County.

After Soviet occupation, the Romanian administration returned and the village became officially part of Romania in March 1945.

[12] Notable people who have lived in the commune include politician István Dán and biologist (and geographer) Pál Samu, born on June 28, 1935.

The highest number of people living in the commune, since recording of population information began in 1850, was in 1956, with a total of 2,849 inhabitants.

In terms of religious belief, most are Reformed (about 57%), while the rest are either Orthodox (about 28%), Seventh-Day Adventists (about 4%), Jehovah's Witnesses (3.4%), Roman Catholic (2.5%), or non-religious (1.6%).