Sri Lanka captain Kusal Perera won the toss and asked Bangladesh to bat first in the third one-day international in Dhaka on Friday.
Bangladesh, who lead the three-match series 2-0 and are looking for their first ever series sweep against Sri Lanka, dropped Liton Das and Mohammad Saifuddin and replaced them with Mohammad Naim and Taskin Ahmed.
Sri Lanka handed ODI debut to Ramesh Mendis, Chamika Karunaratne and Binura Fernando and also brought in Niroshan Dickwella.
Isuru Udana, Lakshan Sandakan, Ashen Bandara and Dasun Shanaka, who played in the opening two matches, were left out.
