The 11th FINA World Junior Synchronised Swimming Championships was held July 8–13, 2010 in St. Petersburg, Russia. The synchronised swimmers are aged between 15 and 18 years old, from 26 nations, swimming in four events: Solo, Duet, Team and Free combination.

Participating nations 26 nations swam at the 2008 World Junior Championships were:

Results Solo   details Anna Udovik  Russia 87.416 Chloé Isaac  Canada 85.685 Ona Carbonell  Spain 84.827 Duet   details Elena Ternovskaya Anna Udovik   Russia 86.541 Yukiko Inui Mariko Sakai   Japan 84.713 Jo-Annie Fortin Chloé Isaac   Canada 83.963 Team   details Russia 86.306 China 83.708 Japan 83.518 Free combination   details Russia 94.900 China 93.200 Greece 91.800

References