In 2012 about half of the children available for domestic adoption in Flanders (Belgium) were assigned to homosexual couples. In 2012 there were 30 children available for adoption in Flanders. 14 of them were assigned to homosexual couples (13 to couples of gay men and 1 to a couple of lesbian women). Every year there are between 25 to 35 children available for adoption in the Flemish region.

In Belgium, adoption was opened-up to same-sex partners in 2006. Co-parent adoptions by lesbian mothers are very frequent. In 2011 there were 238 such adoptions in Flanders (figures for 2012 are not yet known). The Belgian law also authorizes foreign adoptions, but up to now the existing adoption organizations do not collaborate with countries that allow adoptions by gay couples. Foreign adoptions by gay or lesbian couples are very exceptional (only one foreign adoption by a couple of gay men was reported).

In Belgium, the assignment of children for adoption is a regional competence. In the French-speaking part of Belgium, there was only 1 domestic adoption (out of 33) by a homosexual couple in 2013.