|This article or subsection has an associated category.||2091|
|years:|| 2088 2089 2090 2091 2092 2093 2094
(stardates from 2091.0)
|decades:||2060s 2070s 2080s 2090s 2100s 2110s 2120s|
|centuries:||20th century - 21st century - 22nd century|
2091 was, on Earth's calendar, the 92nd year of the 21st century, and the second year of the 2090s decade. Although this was a time period before Human formulation of stardates, this era begins with stardate 2091.0.