Alhambra Nievas González (born 9 August 1983) is a former Spain women's rugby union international and a current rugby union referee. Nievas refereed the women's final at the 2016 Summer Olympics. In 2016 she also served as an assistant referee at a men's international between Tonga and the United States. This saw her become the first woman to officiate in a men's rugby union international. In 2017 Nievas refereed a Rugby Europe Conference match between Finland and Norway. This saw her become the first woman to referee a men's rugby union international in Europe. In 2016 Nievas, along with Rasta Rasivhenge, was jointly named World Rugby Referee of the Year. She is the first women to win the award. She was previously nominated for the award in 2015.