In January, the Netherlands started a global fund to help women access abortion services, saying Trump's "global gag rule" meant a funding gap of $600 million over the next four years, and has pledged $10 million to the initiative to replace that.
Sweden, Denmark, Belgium, Luxembourg, Finland, Canada and Cape Verde have all also lent their support.
"The government is increasing its support for family planning and safe abortion by 85 million Norwegian crowns ($10 million) compared with 2016," Prime Minister Erna Solberg said.
"At a time when this agenda has come under pressure, a joint effort is particularly important," she said in a statement.
Last month, Trump reinstated a policy requiring overseas organizations that receive US family-planning funds to certify they do not perform abortions or provide abortion advice as a method of family planning.
