Australia and Singapore have suspended operations of all Boeing 737 Max models.
Singapore’s Civil Aviation Authority (CAAS) said it would continue to monitor the situation and review the safety risk posed by the model.
The move will affect Singapore Airlines’ SilkAir, which has six of the jets in its fleet, as well as China Southern Airlines, Garuda Indonesia, Shandong Airlines and Thai Lion Air.
This comes as Indonesia, Mexico, China and Ethiopia announced similar steps following the two deadly crashes involving the 737 Max aircraft in less than five months.
Meanwhile, India's civil aviation regulator has directed that pilots with 1,000 hours and co-pilots with 500 hours of flying experience can operate the 737 MAX 8 fleet.
On Sunday, Ethiopian Airlines Max 8 crashed, killing all 157 people on board.
Iran and Israel targeted each other with missiles and airstrikes early on Saturday after Israel launched its biggest-ever air offensive against its longtime foe in a bid to prevent it from developing a nuclear weapon.
Israeli fire and airstrikes killed at least 35 Palestinians across the Gaza Strip, most of them near an aid distribution site operated by the US-backed Gaza Humanitarian Foundation, local health authorities said.
The death toll from the Air India plane crash in Ahmedabad rose to 270 on Saturday, as grieving families expressed frustration over delays in the release of victims' bodies, many of which were badly charred in the tragedy.
US President Donald Trump urged Iran on Friday to make a deal on its nuclear programme before it faced more attacks from Israel that he said would be "even more brutal."
Israel launched widescale strikes against Iran on Friday, saying it targeted nuclear facilities, ballistic missile factories and military commanders and that this was start of a prolonged operation to prevent Tehran from building an atomic weapon.