The by-elections to the Brahmanbaria-2 and Laxmipur-3 constituencies will be held on November 5.
The Election Commission announced the schedule on Tuesday.
Earlier on October 1, a circular was published declaring these two seats vacant. MP Abdus Sattar Bhuiyan from Brahmanbaria-2 constituency and MP AKM Shahjahan Kamal from Laxmipur-3 constituency died on September 30 at Evercare Hospital in Dhaka.
According to the constitution, the Election Commission has to conduct by-polls within 90 days of any seat becoming vacant.