Greece will legalize same-sex marriages and adoptions, Prime Minister Kyriakos Mitsotakis said.
He did not indicate specific terms for solving the issue, which is still a "taboo" topic in the country.
"We will pass a law on marriage equality. I want the discussion to mature in society before I submit a proposal to the cabinet," Mitsotakis told state broadcaster ERT.
The bill is expected to divide opinion in Mitsotakis' New Democracy. According to preliminary estimates, fewer than 100 of the party's 158 MPs are likely to support it.
Mitsotakis said he would not impose party discipline on his MPs and noted that they could abstain from voting in parliament.
A major obstacle to same-sex couples in Greece is the long-standing opposition of the Greek Orthodox Church, which has significant influence in the country's society and politics.
In December, the governing body of the church sent a letter to dioceses in which it categorically condemned same-sex marriages and the adoption of children from them.
"Children are not pets or accessories. No amount of social modernization and no amount of political correctness can cheat children's natural need for a father and a mother," it said.
Under the previous left-wing Syriza government in 2015, Greece legalized civil unions for same-sex couples.
This law resolved matters related to property and inheritance, but did not provide for the adoption of children. /BGNES