Olivia Elizabeth N. Federici (née Allison; born 13 February 1990) is a British synchronised swimmer.

[1] Her most notable achievements to date are winning four consecutive gold medals at the British Synchronised Swimming Championships from 2004 to 2007.

[1] Olivia has competed at numerous European and World Championships, and finished in 14th position in the women's duet[2] at the 2008 Beijing Olympics.

Following a competent performance in the duet competition at the 2010 Commonwealth Games, she was rewarded with a silver medal; this continued with an overall eighth place in the women's duet at the 2011 World Championships with her partner Jenna Randall,[3] who she has worked since the 2006 Commonwealth Games.

[4] She also competed in the women's duet at the 2016 Olympics, this time with Katie Clark.