Kyriaki "Kiki" Liosi (Greek: Κυριακή "Κική" Λιόση; born October 30, 1979) is a female Greek water polo player and Olympic silver medalist with the Greek national team.
She received a silver medal at the 2004 Summer Olympics in 2004 Athens.
She received a gold medal with the Greek team at the 2005 FINA Women's Water Polo World League in Kirishi.
Liosi participated at the 2008 Women's Water Polo Olympic Qualifier in Imperia, where Greece finished 4th and qualified for the 2008 Olympics, in Beijing.
At club level, she played for Olympiacos (1998–2003), Glyfada (2003–2005) and Vouliagmeni (2005–2013).