Tighab () is a village in Paskuh Rural District, Sedeh District, Qaen County, South Khorasan province, Iran.
At the time of the 2006 National Census, the village's population was 1,614 in 412 households. The following census in 2011 counted 1,677 people in 496 households. The 2016 census measured the population of the village as 1,962 people in 598 households. It was the most populous village in its rural district.