Rape calls shock.
Nearly 4,500 calls were made to the helpline by children saying they had been raped ( mostly by someone they knew.
The shocking figures were revealed as the NSPCC, which runs ChildLine, launched a new campaign against child sex abuse.
The 'Don't Hide It' initiative will target children of all ages to let them know there is help if they are being sexually abused.
Last year 8,637 calls were made to the ChildLine about sexual and of those just over half of these calls ( 4,414 ( were about rape.
These included 842 by their natural father, 421 by a stranger, 285 by a boyfriend, the NSPCC said. In all, 86% of the reported rapists were known to the victim.