Almost 20 same-sex couples have tied the knot every week in Queensland since marriage equality laws came into effect last month.

Marking Valentine's Day, Attorney-General Yvette D'Ath said 96 same-sex marriages had been performed in the state's registries and court houses.

"Australians voted strongly in favour of marriage equality and I'm pleased that people are jumping at the chance to freely declare their love for each other," Ms D'Ath said.

"Love is love, regardless of gender, and it is wonderful to see so many happy couples being able to have their union officially recognised by marriage."

On December 7, Australia became the 26th country to legalise same-sex marriage, with the changes coming into effect on January 9.