The Cabinet Division has issued a gazette notification extending the ongoing lockdown till 16 May.
In Bangladesh, limited restrictions were in place from 5-11 April to tame the second wave of the pandemic.
Later, a one-week nationwide lockdown was enforced from 14 April, which was then extended until 28 April. It was further extended till 5 May.
The government, however, lifted some of the restrictions, including on shops and shopping malls.
The border with India was closed for 14 days, starting on 26 April, as Covid-19 has taken a dangerous turn in the neighbouring country.