Cecilia Blanco (born 23 February 1979 in Madrid, Spain) is a Spanish judoka. She competed in two Summer Olympics: in 2004 in Athens in the 70 kg event where she lost the repechage semifinals to Qin Dongya and in 2012 in London in the 70 kg event where she lost her second match to Raša Sraka. Blanco won three silver medals (2001, 2004, 2011) and one bronze medal (2010) at the European Judo Championships.