A majority of Greenland's parliament voted on Tuesday to approve the agreement. Sixteen members voted in favour, none voted against and seven abstained.
The agreement, which will not enter into force until it has been formally approved by both Greenland and Denmark, was signed in New York at the end of September.
It builds on a 1951 defence agreement and includes provisions allowing the United States to establish two new military bases in Greenland, while recognising the sovereignty of the Kingdom of Denmark and the right of the Greenlandic people to self-determination.
The Danish parliament will vote on the agreement on November 19.
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