The January, February, April, May, July, August, September, October and November 2021 Princian Unitary Elections are the 3rd through 11th monthly unitary elections held within the Princian Commonwealth and the only to be held in the year 2021. This article details all unitary elections held within the Princian Commonwealth from the first election of the year on 2 January 2021 until the last on 1 November 2021.