PB-8 Sibi () is a constituency of the Provincial Assembly of Balochistan.
A by-election was held on 17 November 2024, due to the death of Mir Sarfraz Chakar Domki, the previous MPA from this seat. Mir Kohyar Khan Domki, his son, won the election with 36,610 votes.
Provincial elections were held on 8 February 2024. Mir Sarfraz Chakar Domki won the election with 28,173 votes.