Mominul struck stunning centuries in both innings as the first Bangladeshi batsman.
He made the record in Rocket Test Series against visiting Sri Lanka at the Zohur Ahmed Chowdhury Stadium in Chittagong.
Mominul Haque played a 105-run innings for Bangladesh while the first hundred was made on Sunday at the same venue.
The Bangladeshi little master got his record-breaking consecutive century in the 71st over with a cover drive off Sandakanmade.
The dashing test specialist made a total of 281 runs in both innings with eye-catching boundaries and stunning sixes.